I will submit you the best product with respect to your requirements and will provide you along with revsion until you are satisfied with my service.
I have worked on numerous apps, including these modules,
My expertise in Android are :
✔️Online User Authentication (Email, Gmail, Facebook...)
✔️ Photo Sharing
✔️ Cloud back end service
✔️ GPS Location Tracking
✔️ Third-party framework/SDK integration
✔️ Ads integration
✔️ Local/Push Notifications
✔️ Google Map Apis
✔️ Utility app programming
✔️ RESTful Api integrating and Back end service building
✔️ SQLite Database Management .
✔️ android native app development.
✔️ Health/fitness app, education app, business app
✔️ Business app, Finance app
✔️ UI/UX wireframe design