Location
User 1: Name: Rahul, Phone no: 1234567890 User 2: Name: Gaurav, Phone no: 9812345678
Admin Phone: 9876543210, Password: 1234
Youtube vedio link: https://youtu.be/_0etDtwZ_Ug
It support android 4.2 to 9. It has Firebase as realtime Database to store location and Admin with any device can view location.