Hi, I am a professional Android Developer with market experience. I have completed many android based projects successfully that are currently running on Play Store. I have expertise in many types of Android Apps, integrating many functionalities that an app needs to get success in the market, such as Online User Authentication (via Email, Gmail, Facebook, Phone Number, etc), Online Database (Google Firebase/Firestore), Offline database (SQLite), Google APIs, Android Services, Mobile sensors integration to make the apps such as GPS Tracking App, etc. I will provide you with complete source code with all the assets of the application which you will find properly commented for easier understanding and structured for further expansion of features using the best practices.