Hi
How are you?
I can help you in this please share your Existing App as well as your backend detail to check.
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, React Native, Unity 3d, Android SDK, ADT Plugin, Java Programming, JSON, XML, flutter, Utility APIs, MySQL and SQL server database, super level UI design and much more.
PLEASE REVERT ME SO THAT WE COULD START ASAP.
Regards