The ultimate guide to building a mobile app
Got a great idea for an app? Need a new way to grow your business? We tell you everything you need to know about building a mobile app in 2020.
iPhone is the most popular smartphone and was created by Apple Inc. The platform is commonly used all over the world by millions of people and businesses alike. An iPhone Developer holds the skills and knowledge to effectively develop the app on the iOS platform. Whether an organization needs an iPhone app that you want to make available in the App Store, a game or a complex enterprise solution, an experienced iPhone developer can handle just about anything.
An iPhone Developer is knowledgeable in essential development techniques like Object Oriented Programming, Swift and Objective-C as well as advanced development techniques like Core Data and Core Animation. Developers have expertise in Process Methodologies such as Agile, Extreme Programming and Waterfall for flexible development. They are also familiar with creating efficient user interfaces for mobile apps to ensure a great user experience.
The purpose of hiring an iPhone Developer on Freelancer.com is to help make clients' visions come to life with their app development skills and knowledge. This way, their ideas can come to life without going through the hassle of dealing with technical issues or relying on additional manpower. It doesn't matter if it's big or small - they will help clients make their dreams become reality through iOS mobile application development.
Here's some projects that our expert iPhone Developers made real:
Getting an experienced iOS developer to build the right application helps take clients to the next level in terms of product performance, design and customer satisfaction. Hiring an iPhone Developer on Freelancer.com makes this process easy, fast, reliable and cost-efficient for organizations of any size who are looking for an expert to bring their project to life.
If your organization has a project related to iOS mobile application development, then why not look at posting it up on Freelancer.com? With their assistance in building custom apps, you can rest assured that quality and efficiency are guaranteed with reasonable prices at any size or scale. So don’t hesitate, post your project up today and hire an experiencediPhone Developer on Freelancer now!
From 231,220 reviews, clients rate our iPhone Developers 4.9 out of 5 stars.iPhone is the most popular smartphone and was created by Apple Inc. The platform is commonly used all over the world by millions of people and businesses alike. An iPhone Developer holds the skills and knowledge to effectively develop the app on the iOS platform. Whether an organization needs an iPhone app that you want to make available in the App Store, a game or a complex enterprise solution, an experienced iPhone developer can handle just about anything.
An iPhone Developer is knowledgeable in essential development techniques like Object Oriented Programming, Swift and Objective-C as well as advanced development techniques like Core Data and Core Animation. Developers have expertise in Process Methodologies such as Agile, Extreme Programming and Waterfall for flexible development. They are also familiar with creating efficient user interfaces for mobile apps to ensure a great user experience.
The purpose of hiring an iPhone Developer on Freelancer.com is to help make clients' visions come to life with their app development skills and knowledge. This way, their ideas can come to life without going through the hassle of dealing with technical issues or relying on additional manpower. It doesn't matter if it's big or small - they will help clients make their dreams become reality through iOS mobile application development.
Here's some projects that our expert iPhone Developers made real:
Getting an experienced iOS developer to build the right application helps take clients to the next level in terms of product performance, design and customer satisfaction. Hiring an iPhone Developer on Freelancer.com makes this process easy, fast, reliable and cost-efficient for organizations of any size who are looking for an expert to bring their project to life.
If your organization has a project related to iOS mobile application development, then why not look at posting it up on Freelancer.com? With their assistance in building custom apps, you can rest assured that quality and efficiency are guaranteed with reasonable prices at any size or scale. So don’t hesitate, post your project up today and hire an experiencediPhone Developer on Freelancer now!
From 231,220 reviews, clients rate our iPhone Developers 4.9 out of 5 stars.I’m building , a HIPAA-compliant iOS and Android application that pulls a patient’s electronic health records in real time, listens to the appointment through the device microphone, transcribes the conversation instantly, and injects safety guidance on the spot. Whenever the dialogue reveals a potential medical collision—be it a medication, an allergy, or an existing diagnosis—the app must flag it immediately. For medication errors the first release only needs drug interaction alerts; dosage verification and duplicate-therapy checks can wait until a later milestone. After each visit the system should generate an English- and Spanish-language consolidation report that summarises the transcript, the interventions triggered, and any outstanding follow-up items. Key...
I’m ready to turn a fresh social-networking idea into a polished iOS app focused squarely on entertainment. The first release needs just one mission-critical feature: a real-time messaging system that feels as fluid as Apple’s own Messages. Everything else—profiles, content sharing, and any flashy extras—can wait for later iterations, so your attention can stay on building a rock-solid chat experience. Here’s what I have in mind: • Swift or SwiftUI codebase that compiles cleanly in the latest Xcode • Secure user authentication (Apple ID preferred, but I’m open to Firebase/Auth0 if you have a strong argument) • 1-to-1 and group messaging with push notifications that actually land • A lightweight, modern interface that looks at ...
I’m building a full-featured professional marketplace that brings together three distinct verticals—freelance services, consulting services and on-demand home services—inside one cohesive product. The end goal is a single code-base driving iOS, Android and a responsive web app, all sharing the same backend, database and admin console. Core flow • Dual-sided accounts: providers list offers, customers browse, book and pay. • Multiple sign-in methods are mandatory—classic email & password, social media (Google, Facebook, Apple, etc.) and phone number with OTP. • Real-time availability, location (for home services), in-app chat, push notifications and a multi-currency payment gateway round out the feature set. Tech preferences I’m open...
I’m overhauling the user interface of my subscription-based grocery mobile application, which is already built in Flutter. The goal is purely to modernize the design and give every screen a minimalistic, clean aesthetic that feels effortless for shoppers racing through their weekly list. Functionally everything stays the same; what I need is a fresh visual layer and the accompanying Flutter code to make it real. Scope • Redesign all current screens: onboarding, home, product-search, cart/checkout, subscription management, order tracking, and profile. • Produce updated, platform-compliant assets (icons, illustrations, typography, colour tokens) that follow Material 3 guidelines while keeping the palette light and uncluttered. • Implement the new layouts directly ...
I’m building a brand-new mobile application that must launch on both Android and iOS. The concept, wireframes, and design assets are ready; now I need the complete app coded, tested, and prepared for store submission. Scope of work • Plan the architecture, choose an appropriate tech stack (native Kotlin + Swift or a cross-platform solution such as Flutter or React Native), and set up the project repo. • Integrate the backend REST APIs I provide, handle secure authentication, real-time push notifications, and any additional modules defined in the product backlog. • Implement analytics, automated tests, and a simple CI/CD pipeline so each milestone produces a store-ready build. Deliverables 1. Clean, well-documented source code for both platforms. 2. Play S...
1. Executive Summary & Vision We are building a dynamic, crowdsourced safety layer for urban mobility. While current navigation systems optimize purely for speed and distance, they ignore critical civic infrastructure failures (e.g., broken streetlights, abandoned roads, open sewers) that directly impact personal safety. Our solution empowers citizens to report these hazards, translates that data into a real-time safety index, and routes users through the safest possible paths. The ultimate commercial goal is B2B API integration with major ride-sharing and delivery platforms to offer a "Request Safe Route" feature. 2. What is Being Implemented (The MVP Scope) To validate the concept and the routing algorithm, we are deploying a closed-beta prototype for 300 users, strictly ge...
I’m ready to bring a full-featured, Uber-style taxi service to life and need a developer (or small team) who can take the project from concept to launch on both iOS and Android. The passenger app must include frictionless user registration and secure login, real-time ride booking with live vehicle tracking on a map, plus in-app payment integration that supports major cards and digital wallets. In parallel, I also require a separate driver app. It should mirror the passenger experience where appropriate, receiving ride requests, turn-by-turn navigation, earnings summaries, and status toggles, while keeping the codebase as maintainable as possible. Key expectations • Native or cross-platform code that meets Apple App Store and Google Play guidelines • Clean, well-docume...
I need a mobile app and website for documentation management, supporting both iOS and Android. Key Features: - Document upload and storage - Document control - Project correspondence - Submittals - RFIs (Requests for Information) - Transmittals - STC (Submittal Tracking Change) User Role: - Admin Ideal Skills & Experience: - Mobile app development (iOS & Android) - Web development - Experience with document management systems - Strong understanding of user roles and permissions - UI/UX design for intuitive navigation
I’m ready to turn my pani puri venture into a memorable brand and I see content marketing as the most effective route. The heart of this project is an engaging, easy-to-use pani puri mobile app that entertains, educates and ultimately drives sales. Here’s what I have in mind: • A clean, lightweight Android/iOS app that tells our brand story, showcases ingredients and flavours, and nudges users toward local outlets or delivery partners. • Built-in content sections for seasonal offers, behind-the-scenes snippets and snackable tips that keep users coming back. • Smooth integration with social platforms so every update in the app can double as a post, reel or story, reinforcing our wider content-marketing push. I’ll supply the branding guidelines, colour ...
I need an experienced Android team to build two separate Play-Store-ready apps, starting with the Medicine Selling App. The ride-hailing platform will follow once the pharmacy solution is live. Medicine Selling App – phase one The core experience is a clean, secure mobile storefront where customers log in with phone-number verification, search medicines by name, browse existing product categories, upload a prescription when required, add items to cart, pay in-app, and track delivery in real time. An internal courier module should let my dispatchers assign, monitor and update order status from preparation through doorstep drop-off. Rider Booking App – phase two After the pharmacy app is published, I’ll move straight to the Uber-style solution: passenger and driver si...
I’m building a mobile app focused squarely on personal financial management, and the first milestone is a rock-solid expense-tracking module. The core goal is to let users record, categorize, and review their day-to-day spending from any iOS or Android device. Here’s what I need right now: • Intuitive screens for adding expenses on the go—receipt upload, amount, category, date, notes. • A clean dashboard that summarizes spending by category and shows simple charts. • Secure local storage plus cloud sync so data is never lost. • Lightweight user authentication (email or social sign-in). • Codebase in React Native or Flutter—whichever you’re most comfortable shipping to both stores quickly. While the priority is expense tra...
I need a single AI application that can see, hear and speak to the user. Using my own OpenAI key (or, if you prefer, a Gemini or Claude endpoint), I want you to wire conversational logic with the device camera so the assistant can recognise whatever the lens captures—faces, emotions, objects, actions, text, you name it—then hold a natural dialogue about what it sees. The build has to run everywhere: a mobile version for iOS & Android, a web app that works in the browser, and a desktop release for Windows and macOS. Users should be able to create an account, log in, and start interacting immediately. Speech-to-text converts their voice to prompts, vision models process the live feed, and text-to-speech delivers the reply in real time. For LLM calls, default to ChatGPT via ...
I have a website built with and I want a simple mobile app for iOS and Android. The website already works well on mobile and has the same structure in 9 languages. What I need: * Android app * iOS app * The app should load and display the website correctly * Ready for Google Play and Apple App Store Simple solution is fine (React Native). Please send: * Price * Time to complete * Example of similar work
I want to create a football game for iOS and Android that puts players directly on the pitch in first-person view. Think of the polish of eFootball or FC Mobile, but with a fantasy twist: over-the-top stadiums, signature power-ups, and dramatic special moves that bend the laws of physics while the core rules of soccer still apply. The deliverable I need is an initial playable build that clearly proves the concept. It should: • run smoothly on both iOS and Android phones • place the user in first-person perspective at all times (no fallback third-person camera) • include at least one fantasy mechanic—e.g., time-slow dribbles, elemental shots, or arena hazards • ship with touch controls inspired by modern mobile football titles, refined for the new viewpoint A sho...
I need a seasoned React Native developer to build a full-featured cashback platform that runs smoothly on both iOS and Android. The app’s core revolves around three pillars: secure user registration & login, reliable transaction tracking, and accurate cashback calculation and management. Cash rewards will sit in a wallet built directly into the app, so the balance updates in real time and can later be withdrawn or spent according to rules we will define together. I have the flows mapped out and screen sketches ready; what I’m missing is your mobile expertise to turn them into a polished, production-ready application. Key deliverables: • React Native codebase targeting iOS and Android • In-app wallet logic with balance updates triggered by tracked transaction...
I’m building an entertainment app that streams video on Android, iOS, LG webOS, and Samsung Tizen. The core experience centres on both live streaming and an on-demand catalogue, with an AI layer that surfaces personalised recommendations and smart search results in real time. The flow I have in mind is straightforward: users sign in once, land on a home screen tailored by the recommendation engine, and can jump between live channels or the on-demand library without friction. Playback must support adaptive-bitrate HLS/DASH, multiple audio tracks, and subtitles. Because this spans mobile and smart-TV ecosystems, the UI needs to scale gracefully from touch interactions to remote-control navigation. I’ll provide brand assets, sample content feeds, and access to the existing CDN. ...
App Name: SHERO – For Her About the App (Brief Message) SHERO—For Her is a women-focused digital platform designed to provide safety, career opportunities, emotional support, skill development, and community networking—all in one secure space. It empowers women to grow, connect, learn, and feel safe in their personal and professional journeys. Core Features & Tiles Structure We can structure the homepage with 9 main tiles (clean, powerful, easy navigation). (Welcome Message with their Name on Top) 1. Need Help? (Emergency – SOS) 2. Solo Safari – (Travel Safe) 3. Women's Careers (Find a Job) 4. Counselling (We are with you) 5. Medical & Health (We Care About You) 6. Beauty 7. Make New Friends 8. What’s Happening Near You? 9. Motivational Stat...
I run an established online fitness coaching platform that delivers training programs, diet guidance and educational content to paying clients. The web version works, but it now needs a serious tune-up and, most importantly, a companion mobile app for both Android and iOS. What I want to tackle first is performance and speed—I need pages to load fast and videos to stream smoothly. At the same time, the overall user experience and usability must feel modern and intuitive, so clients can find their plans without hunting through menus. Finally, several automations (payments, email sequences, progress-sheet syncing and calendar reminders) have to be refactored and re-connected so they run reliably in the background. For the app itself my must-have features are: • secure login ti...
I am looking for a creative video designer who can create a fun and colorful birthday invitation video for a child’s birthday party. The video should be attractive, playful, and suitable for kids. Requirements: - Duration: 20–30 seconds - Theme: Colorful, fun, and kid-friendly (cartoon/animation style preferred) - Include: Child’s name, age, date, time, venue, and RSVP details - Background music: Happy birthday or cheerful kids music - High-quality video suitable for sharing on WhatsApp and social media Deliverables: - Final video in MP4 format - Editable file (optional but preferred) If you have experience creating birthday invitation videos, please share samples of your previous work. Looking forward to creative ideas!
Project: Armbrella – Fitness & Wellness Social Platform Armbrella is a mobile platform focused on fitness and wellness that combines health tracking tools, social media features, free wellness video content, and a professional search engine for users to connect with trainers and wellness professionals. The platform was originally built using AWS Lambda, but due to performance and stability issues the app launch was delayed. We are now looking for an experienced developer to review the current architecture and migrate the backend to AWS EC2 (or recommend the best AWS architecture) to ensure the platform runs fast, stable, and bug-free before launch. Key Responsibilities • Review the existing codebase and AWS infrastructure • Migrate backend services from AWS Lambda ...
I’m developing a third-person action game for iOS and Android and need a skilled game programmer to push it from concept to a solid, touch-ready build. The art, animations, and core design docs are in place; now I’m looking for clean, efficient code that keeps the frame rate high on mid-range devices. Unity with C# or Unreal Engine using Blueprints/C++ both work for me—choose whichever lets you move fastest while keeping the project maintainable. Deliverables • Full project source (Unity or Unreal) • Playable test build (APK and TestFlight/IPA) • Clear setup instructions so I can iterate after hand-off Acceptance criteria • Smooth third-person movement and camera with on-screen controls • Responsive melee/ranged combat and basic enem...
I’m gearing up for the Canadian-only launch of “Pluto” (brand name confidential for now) on 16 March 2026 – a fun, play-money (no real money/crypto) prediction market app styled like "the TikTok of predictions". Users swipe hunches on NHL, LoL, Valorant, Taylor Swift/pop culture moments, earn play money, streaks & badges. Goal: 1,000 highly engaged users (sign-ups + trades + streaks + referrals) in first 30 days with ~$10,000 USD total budget. You will own: 1. TikTok + Instagram organic posting + paid ads (boosts + Ads Manager) 2. Reddit seeding (r/nhl, r/ValorantCompetitive, r/leagueoflegends etc.) 3. Discord community moderation & engagement 4. Optional: FB Groups + X (Twitter) live polls during NHL games Must-have requirements 1. You live in ...
I’m building a comprehensive astrology platform that must run seamlessly on Web, iOS, and Android. The core of the product combines advanced Astrology, Numerology, and AI-powered Palm Scanning so users can generate personalized reports and interact with experts in real time. Core user services • Live 1-to-1 Video & Audio consultations, plus a Per-Minute call billing flow • Appointment-based sessions selectable in 30 / 45 / 60-minute blocks • Paid digital reports: PDF Kundli, Marriage Match, Career Path, Remedies & Gemstones, and on-demand WhatsApp consultations • Subscription bundles for recurring guidance and content drops System architecture • Multi-panel design: Client, Astrologer, Support, Admin, and Super-Admin dashboards, each with...
CI/CD setup for mobile app - iOS and Android
i want a single product website to be built as per the preview shared please note we want api integration that is razorpay for payment the website can be built using any technology budget is fixed no negotiation will be done related to budget hosting has to be done on our server website has to be responsive and fast below is preview
I’m building a secure, end-to-end doctor–patient consultation platform and need a developer (or small team) who can turn a functional spec into a production-ready web or mobile app. Both doctors and patients will create their own accounts, verify their identities, and sign in through role-based authentication before they can do anything else, so rock-solid auth and data protection are non-negotiable. Core functionality I must see on day one: • Appointment scheduling – patients pick slots from a doctor’s calendar, receive confirmations and reminders, and both sides can reschedule or cancel. • Patient records management – each consultation should automatically attach to the patient’s profile, supporting file uploads (lab results, images) and d...
I'm seeking an experienced app developer to create a sports betting analysis app. The primary focus will be on providing in-depth statistics and analysis to help users make informed betting decisions. Key Requirements: - Coverage of all major sports: Football, Basketball, and Tennis - Comprehensive statistics section including: - Player performance data - Team rankings - Historical match results - Expert betting tips Ideal Skills and Experience: - Strong background in developing sports-related applications - Expertise in data analytics and presentation - Familiarity with betting markets and user needs - UI/UX design skills for an intuitive user experience Please provide examples of similar work done and a rough timeline for project completion.
I need a cross-platform Texas Hold’em poker app that runs smoothly on both iOS and Android. Players must be able to buy chips or top-up balances through an in-app Revolut payment link, so the payment flow has to remain fully native and PCI-compliant. Gameplay is multiplayer. Tables support in-game messaging so opponents can chat while they play, and players can send friend invitations to pull their contacts straight into the same table. Only the admin account may create tables, and from an accompanying web or in-app dashboard I have to see every dealt hand and individual hole card in real time for game-integrity monitoring. No other user has that privilege. Core scope • Full client apps for iOS & Android • Secure Revolut payment integration • Real-time m...
I'm looking for an experienced developer to create a file management app for iPhone and iPad. The app should focus on file storage and organization, supporting all common file types. Key Features: - Support for all common file types (documents, media, etc.) - Advanced search and filter options for easy file retrieval - Upload selected files to local host through http API (API wil be provided) Ideal Skills and Experience: - Proven experience in developing iOS applications, particularly in file management - Strong understanding of iOS file systems and app architecture - Expertise in implementing efficient search and filter functionalities - Familiarity with UI/UX design principles for a seamless user experience Please include relevant work samples in your bid.
Imagine a hyper-personalized dating ecosystem designed to scale across a global user base of 100 million, where finding a partner is driven by high-tech precision rather than luck. By integrating biometric face scans for absolute identity verification and security, the platform ensures every profile is authentic, while an Instagram-inspired algorithm continuously learns your aesthetic preferences through your engagement patterns. The core of your discovery process is a sophisticated visual-to-data mapping tool: users upload 10 images of people they find attractive, which the AI deconstructs via image-to-text processing into specific descriptive keywords and hashtags. This creates a data-driven "attraction blueprint," allowing the app to filter through millions of profiles to find...
I built my application on Lovable and it is already live on iOS, Android and the Web. Before I push further, I want an experienced full-stack developer to comb through both the front end and the back end to be sure everything works exactly as laid out in my documentation (which is detailed and up-to-date). Scope • Verify core app functionality end-to-end on all three platforms. • Inspect and test every backend integration: APIs, database calls, authentication, third-party services and error handling. • Locate and resolve any bugs, performance issues or data mismatches you discover. • Provide a concise report of findings, fixes applied and any remaining recommendations. You will receive full source access, staging credentials and the documentation pack so you c...
We have already apps ready to upload, we need help with upload to apple store and create the professionl catchy images content to put in the app
I have twelve app screenshots that must be rebuilt in full-resolution and placed inside realistic device frames—six for an iPhone 17 Max submission to the Apple App Store and six for a Samsung Galaxy S25 submission to Google Play. You will receive finished mock-ups of every screen, along with one sample file for context, so your job is to transform these drafts into polished, upload-ready assets. Key requirements you’ll need to observe: • Follow the latest resolution specifications for both stores and keep every pixel crisp. • Respect Apple and Google guidelines on safe areas, text/graphic placement, and approved color usage so nothing is cropped or rejected. • Apply bold, modern text overlays or annotations where indicated in each mock-up; copy and style ...
I’m building a bite-sized, proof-of-concept for my mobile game and need a playable prototype that works on both iOS and Android. The scope is intentionally tight: one adoptable dog on the Home screen, one “Care” action, and a reward pop-up driven by a simple progress bar. Here’s the flow I want to see: • Home Screen – Loads a dog image and short bio. I’ll supply a photo and copy, but you may need to polish or supplement them with new art so everything feels cohesive. • Gameplay – Tapping a single “Feed” (or similar) button counts as caring for the dog. Each tap nudges a progress bar forward. • Reward Moment – When the bar reaches 100 %, a modal pops up saying: “Goal Met! Supplies earned via Chewy Canada....
I'm looking for a mobile app developer to create an "advise and support" app with a focus on user acquisition and engagement. Key Requirements: - Core Functionality: The app should facilitate advice sharing and support among users. - User Growth: Implement features to attract and retain users, such as a referral program or loyalty rewards. Ideal Skills and Experience: - Experience in developing social networking or advice-based mobile applications. - Strong understanding of user acquisition strategies. - Proficiency in implementing engagement features like referral programs and loyalty rewards. - UI/UX design skills to create an intuitive and appealing user interface. Please provide examples of similar projects you've completed.
I am looking to have a single mobile application built that serves both ends of my travel business. On the B2B side, partner agents need a clean interface where they can log in and handle booking management—creating, viewing, modifying, or cancelling reservations for their customers in real time. On the consumer side, travellers should be able to search available flights, hotels, and packages and complete a seamless booking flow from discovery to payment. A consistent look-and-feel across both user groups matters to me, but the journeys will differ slightly, so thoughtful role-based navigation is essential. I am open to your recommended stack—whether Flutter, React Native, native iOS/Android, or another approach—as long as the final build is stable, quick to load, and ea...
I want to launch a streamlined e-commerce app built specifically for Android. The goal is a fast, intuitive shopping experience that lets users browse products, manage a cart, pay securely, and track their orders—all from their phones. Key requirements • Native or high-performance cross-platform build for Android only. • Clean, modern UI that follows Material Design. • Secure user sign-up/login, profile management, and password recovery. • Product catalogue with search, filtering, and detailed views. • Shopping cart, checkout flow, and payment-gateway integration. • Order history and basic order-tracking screen. • Simple admin connection or API hooks so I can update products, prices, and inventory without republishing the app. Ni...
Project Title: Mobile iOS App for Team Work & Revenue Management (Admin Controlled) Project Description: I need a professional mobile app (iOS) developed and published on the Apple App Store. The app is for my company, PrimeLink Networks. This is NOT a website. I need a real mobile app. Main Features: 1. Team System Each team has its own separate workspace Teams cannot see other teams Admin can see all teams Admin can rename or delete teams Users are assigned to a team by email Users must enter their name when submitting a client 2. Work Entry Table Fields: Work Date Auto-calculated Cycle (11th to 11th) Client Name Client Number client number Location Type (A-Z = 300 MAD / Existant = 150 MAD) Status (Completed / Blocked / In Progress / Not Started) Comments Rules: Revenue auto-calculat...
Every time I scan a business card with the native Go HighLevel mobile app I want an instant, hands-free sequence to kick in. Step one is a personalized SMS that shares my contact info the moment the card finishes scanning. After that, I need three to four additional touches spread over the next few days—simple question-and-answer checkpoints that ultimately send the prospect a short form to collect any extra details I need. I already use GHL, so the entire flow must live inside its Workflow builder and fire from the “contact created via mobile card scanner” trigger. Use the built-in Twilio connection for texting; no third-party SMS services. Timing, message copy, and form link placeholders should all be easy for me to tweak later. Acceptance criteria: • Contact r...
I have a React Native mobile app that almost works, but the visual design doesn’t match the polished experience I’m after. The core functionality is stable; what really needs love is the user interface—fonts, colors, spacing, icons, and overall consistency. Here’s what I’m looking for: • Audit the current UI components and identify weak spots in the visual design. • Redesign screens so they feel cohesive on both iOS and Android, following modern React Native best practices. • Refactor or replace any custom components that block a smooth, responsive layout. • Tidy the codebase while you’re in there—eliminate dead styles, resolve warnings, and chase down the lingering edge-case bugs tied to the UI layer. • Deliver up...
I’m ready to turn a simple concept into a polished mobile app that runs smoothly on both iOS and Android. At this stage the core requirement is straightforward: users must be able to create an account, sign in, and stay securely authenticated throughout a session. I’m open to the framework or language you prefer—whether you lean toward Flutter, React Native, Kotlin Multiplatform, or native Swift UI and Kotlin—as long as the final build is stable, fast, and easy to maintain. Here’s what I need from you: • A complete cross-platform codebase with clean architecture and clear documentation • A lightweight, modern UI that looks native on each platform • Secure user registration, login, and persistent authentication (email/password at minimum; ...
I’m ready to turn my store concept into a polished mobile shopping experience delivered simultaneously on iOS and Android. Because I chose “Both” in the platform question, I’m looking for a single, maintainable code-base—Flutter, React Native or a comparable cross-platform framework would be ideal, but I’m happy to hear your recommendation if you have strong reasoning. The goal is a complete, production-ready e-commerce app: smooth browsing, quick search, secure checkout, and rock-solid order handling. I will supply product data and brand assets; you’ll handle the technical build, clean UI/UX, and connection to a payment gateway of our choice (Stripe, PayPal, or a regional option we can discuss). Deliverables • Source code and project files ...
I run an established online fitness coaching platform that delivers training programs, diet guidance and educational content to paying clients. The web version works, but it now needs a serious tune-up and, most importantly, a companion mobile app for both Android and iOS. What I want to tackle first is performance and speed—I need pages to load fast and videos to stream smoothly. At the same time, the overall user experience and usability must feel modern and intuitive, so clients can find their plans without hunting through menus. Finally, several automations (payments, email sequences, progress-sheet syncing and calendar reminders) have to be refactored and re-connected so they run reliably in the background. For the app itself my must-have features are: • secure login ti...
I’m looking for an experienced Flutter developer to review an existing Flutter codebase and help finalize the app. The app is already developed and the full source code is available. However, the UI implementation does not fully match the Figma design, and I want to make sure the codebase is clean, stable, and follows proper Flutter standards before moving forward. What needs to be done 1. Code Review • Review the existing Flutter project • Check overall architecture and code quality • Verify state management and navigation logic • Identify potential issues or bad practices • Ensure the project is maintainable for future development 2. UI Adjustments • Align the UI with the Figma design (pixel-perfect) • Fix spacing, padding, alignment, ...
I need a mobile app that lets customers book our services quickly and drives measurable sales growth. The core idea is a streamlined service-booking flow, not a full e-commerce catalog. Key features I want built: • Account creation with social or email sign-up • Service catalogue with real-time availability and pricing • Calendar picker for users to choose appointment slots • In-app payments (credit card, Apple Pay, Google Pay) • Push notifications for confirmations, reminders, and promos • Admin dashboard where my team can add or edit services, prices, and time slots For the first release, I’m looking for: 1. Wireframes and polished UI mock-ups that match our brand colors. 2. A working iOS and Android build using React Native or Fl...
I already have the iOS and Android build folders packaged, certificates generated, and step-by-step documentation prepared. All that’s left is the actual submission to Apple App Store and Google Play Console. Here’s what I need you to do the moment you receive the files and credentials: • Log in to both developer consoles, follow the supplied documentation, and upload the binaries, screenshots, descriptions, and icons exactly as provided. • Configure the necessary store listings (privacy policy links, age rating, pricing set to free) without altering any content. • Initiate review on both stores and send me the submission receipts or screenshots showing the apps “Waiting for Review”. Everything is ready for a straight upload, so this is a...
Only bid if you have build this before. am building a robust payment switch that routes transactions from multiple front-end channels to a variety of processors in real time. The core engine must reliably accept, normalize and forward the following transaction types: • Credit card payments • Bank transfers (ACH/SEPA or equivalent) • Digital wallets (Apple Pay, Google Pay, etc.) Security is non-negotiable. The codebase, data flows and storage all have to meet: • Full PCI-DSS compliance (up to SAQ-D level) • End-to-end encryption of data in transit and at rest • Tokenization services to ensure PANs are never exposed to client applications The switch will serve three distinct environments, so clear, modular integration layers are required: • E-c...
I’m launching my own cryptocurrency and now need a fully-functional software wallet that runs smoothly on both iOS and Android. The app must let users create or import a wallet, generate a secure mnemonic, view real-time balances, and send or receive funds with QR-code convenience. All signing happens client-side; private keys stay encrypted on the device and can be unlocked with PIN, Face ID, or fingerprint. You’ll integrate directly with the coin’s daemon or a lightweight JSON-RPC/REST gateway that I’ll expose, handling key derivation, transaction building, and broadcast. A clean, intuitive UI is essential so first-time users feel at home. React Native, Flutter, Kotlin/Swift—any modern mobile stack is fine as long as the final binaries satisfy App Store and...
I need a clean, reliable mobile app that runs on both iOS and Android and takes all the manual work out of organizing an 8-player doubles round robin. The core logic should automatically create every unique pairing so each player partners with everyone else exactly once (seven matches per person), then schedule the matches seamlessly. After each game, players or the host must be able to record the result with a single tap. Wins and losses should feed straight into a real-time leaderboard that awards points accordingly and reorders positions instantly when new scores arrive. Key flow I’m picturing • Players register in-app, pay their entry fee, and immediately see the full match list. • Payments need to accept both credit/debit cards and PayPal through a secure, PCI-co...
I’m creating an app called “Dream Believe Achievement” that helps users stay on top of their exercise routine. The core of the product is a seamless workout-tracking experience that lets people log sets, reps, and time, then review their performance in an intuitive dashboard. Everything else in the roadmap—nutrition tips, social challenges, progress photos—will build on this foundation, so getting the tracker right is my first priority. Here’s what I need from you: • Design and develop the workout-tracking module from login to data storage and basic analytics. • Build a clean, motivating interface that feels at home on modern iOS and Android devices (React Native, Flutter or native stacks are all fine as long as you can justify the choice...
Got a great idea for an app? Need a new way to grow your business? We tell you everything you need to know about building a mobile app in 2020.
Learn how to find and successfully work with a freelance Mobile App Developer for your next project.
Learn how to effectively work with freelance App Usability Analysts and optimize your app's usability. Maximize user engagement and conversion rates.