Purify

Extend your Android battery life

Repair Battery Life

Extend the life of your smartphone battery

Battery Guru

An app that shows your device's battery information

2x Battery

Extend your battery life

DU Battery Saver

Extend your battery life and improve its performance

MTK Engineering Mode

Access the secret and hidden menu of your MTK mobile

Kaspersky Battery Life

Easily extend your battery life

CPU Tuner

The most complete battery manager

Battery Sound Notification

Configure audio notifications that report on battery status

AutomateIt

Give your phone some work to do

Brevent

An app to control background processes

AccuBattery

Unleash the full potential of the battery on your Android device

Bright Day

Adjust the brightness of the screen to the daytime hours

Battery Doctor

Manage your battery life and save on battery consumption

Pika!

Customize the loading screen of your Android

Super Battery

Extend the life of your phone's battery

Picture Insect

Insect identifier for cell phones

HiCare - Huawei

Huawei post-sales service app

iFixit

An all-purpose repair manual

Wikipedia

The biggest reference work in the palm of your hand

Kiwix

The offline version of Wikipedia on your phone

Instructables

All the tutorials you can think of

Samsung Members

Make the most of your Samsung device

Infocar

Digital car diagnostic tool

wikiHow

Consists of tens of thousands of explanatory tutorials

Google Arts & Culture

Google brings art to your smartphone

Rock Identifier

Identify rocks and discover the rocks around you

Plant App

Learn to identify and care for plants

Plant Care Reminder

Learn to take care of your plants

ElectroDroid

Resources for electronics professionals and enthusiasts

Shroomify

Discover all the secrets of mushrooms