Develop Android application

Looking for develop Multi App on single phone via our app This app to be developed for Android Please find attached file for better understanding 1. Whatsapp Facebook Skype and other app to be opened via our app (i.e that phone already having Whatsapp if they wanted to use another Whatsapp to be possible via our app) 2. Web based details required 3. All app to be fulfill law of Android 4. All user data & files to be stored in local devise only. 5. to be comfortable with Android 2+ to latest version to latest version and time to time updates option to be available 6. please feel free to Suggestion and feedback