Hii, I am Muhammad Raza, I have 4+years in Programming and Android apps Development. I have done different projects and already upload on GitHub free source code. 
1) Data storage apps
2) Messenger apps 
3) Business apps
4) Apps for personal use
5) Inventory apps
6) Responsive layouts
7) Different screen resolution
8) Different version support
9) User Authentications
10) Image processing apps
11) Google play apps
 AND Much More

I am available 24 hours for you