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.
Bump - Get connected. Want to share something with a friend or someone you just met? Bump your phones together.
Accubattery - Monitor's battery capacity through the use of science
Badger - A fast key-value store written natively in Go
Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.
Kalkul - 3D-Printed Immersive Wired Earphones