Hello dear clients I am Shivam Singh a professional Mobile app developer with more than 5 years experience mobile app development and I will do any type of android and ios application. So I have good experience Location tracking base app and google map GPS based application. My expertise Google map ,location tracking ,location tracking ,latitude ,longitude ,adapter,XML ,firebase , sq lite ,web API ,Room database, my SQL,XML,business app, lawyer app, cream app ,custom app as well as clients demands. My expertise. Android Studio java iOS swift programming Kotlin Fire base (Real time database) Live Data(Room Database) MVVM Structure KOIN BACK-END SERVICES View Model Sq Lite (Offline database) Google Maps GPS(Location tracking) Web Services (Volley and Retrofits Library) Room Db Jitpack library Json API Payment Integration chat apps Front end and Back end setup web site convert into android app Adapters and Recyclear View In-App Purchase Google Admob, Startapp ads Parse, One signal Google APIs