Hi
I have read your requirement for Calendar App also seen your reference please come to chat we will have detail discussion regarding it and can start the work asap.
We are IT company deals in App and Web development, App and Web designing, backend, SEO/SMM cloud services, and enterprise solutions.
We have knowledge of Xcode IDE(Objective-C), Swift, Eclipse IDE, Android SDK, ADT Plugin, Java Programming, JSON, XML, Utility APIs, MySQL and SQL server database, super level UI design and much more.
PLEASE REVERT ME SO THAT WE COULD START ASAP.
Regards