Remo Duplicate File Remover - Remo Duplicate File Remover is a simple yet powerful duplicate file remover app that lets you easily search and remove duplicate files on your Android mobile and tablet.
DU Battery Saver - DU Battery Saver, get up to 50% more battery life for your Android phone. Battery Saver learns how you use your phone, then creates smart profiles that match your settings to your needs while getting more life from your battery.
Android Cleaner - Android Cleaner – Phone Booster and Memory Optimizer is a powerful and effective app to optimize your device’s performance.
Accubattery - Monitor's battery capacity through the use of science
Files by Google - A file management app that helps you free up space, find files faster, share files offline, and back up files to the cloud.
Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.