Hello,
I have gone through the information you have given and understood your requirements.
We have worked on Admin panel, Fetching data from server, CRUD functionality, API integration, GPS services like Google maps, Location tracker, Near be location, Give directions, Voice recorder, Search bar option, Display information on screen and can create this application as per your requirements.
We are an experienced Android developer based out of central India and have developed many application before. References are available if asked.
Please let me know if you have any question and I am keen to discuss it further.
Thanks
Nidhi