Private APP Task

Hi We have written app in android for following features: Basically app purpose is to compress the files size to free up the HD memory. This reduces memory for Images/ Videos/ Audio files/ PDF Files. #1 APP shows screen for buttons like Images, Videos etc #2 When we click button that will run a progress meter and shows how many images and how much memory will be free up. When we click Proceed then it shows all files and select check boxes so that user can select files to compress..Once click it asks confirmation and then compress. We want basically this smooth and run fast and should work consistently on all android version smart Phones so we want an experienced programmer who can work fast. Payment will be done once app tested and approved by client and upload to google play store. App must work with quality. So please if anyone who is good and have worked for such system apps. Please check screen shot..how it works. Download and install latest apk and check how it works. Please write in your bid "I INSTALLED APK" So that we can understand that you have already know project and tested app. On My Phone and some few guys phone app works but there are many phones in which this do not work so basically we want app smooth and tested and need to run on all mobiles and design changes. Budget is 155$ Thanks SUNIL