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.
Now UI Kit - A beautiful Bootstrap 4 UI kit. Yours free.
Accubattery - Monitor's battery capacity through the use of science
Bots UI Kit - Fully customizable Sketch UI Kit for Messenger Platform
Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.
Landing UI Kit - Handcrafted UI components for landing pages