Upgrade My Android application

"We Are looking Only expert developer" We have a app and we need some improvements in tat app. Work will be done in 2 milestones as mentioned below: Part-1 Current Changes • Latest cache do not stay in mobile. Whenever news get refreshed, latest news must stay in cache and remove older so we can read last latest news in offline. • In side menu category: on every click news becomes double. There must be no duplication of post on any category. When we click on any side-menu category, it must call for latest post. • On publishing post a error comes. Resolve tat. Part-2 New Changes 1. Squeeze/Pull down for Refresh 2. Pool up View More Post 3. Edit User Profile page, Total No. of Registered User page, user can upload photo and other details and this integrated with site. 4. On Site Comment And App Comment integrate with site. 5. Add Socal Loging In App or integrate with site 6. Video View on app 7. Also add more animation or effects to make in attractive We want App faster app & Best Performance. Also add more animation or effects to make in attractive.