I have a group of experienced android app developers.I have experience of making different kind of applications:
Map based tracking (GPS Tracking)
Offline GPS tracking application
Map based routing application
Syncing of data
Chatting and location sharing
Employee time tracking
Camera based apps
Information sharing social App
Image gallery App
Tourist Guide App
you just need to follow those steps:
(1) Write you functionality which you need in app,
(2) If you have any referral app which can help us understand your functionality or feature, It would be a plus point.
(3) if you can make rough sketch it will better for us get what you need...