I will develop android mobile app

About:

i will build NATIVE applications in Android for many worldwide clients. My core competency lies in complete end-to-end management of a new application and I'm seeking opportunities to build your application from the ground up for you and your business. I can come up with excellent and high quality product in a short reasonable period of time with reasonable amount. 

Features:

- Map's API Integration,GPS for location ,SQL lite for database, In-App Purchase integration,convert Web in mobile Application, Social Media integration.

- Chat Application ( using Firebase and node.js Servers )
- Social Network based Application (like facebook, instagram).
- Animation based application.
- Web service based application. ( JSON , XML  )
- Local Database application.
- Re develop of current application.
- Bug solving for exiting application

Note: a basic app starts from $50, please share complete requirements. I would like to have Skype conversation for better understanding.