I have already build many apps like app you need.
I have experience with Spy app, Guard patrol system based on Nfc Read/Write , Location trace based on GPS, Routing app based on GoogleMp,Youtubevideo, JNLisää
Google map api expert here.
Here are some of my previous projects:
What you are asking for seems relatively simple. I need to understand and require few more detail on how your current application is developed before i can provide a more accurate quote.
I'm quoting a higher Lisää