License: Freeware

Coolphone is designed to  cool down your android device, fix battery overheat and save battery energy. Apart from the effective tap-to-cool function, this app  (totally free and no ads) also innovates a unique feature to optimize battery saving purpose in the screen lock mode, that is, Smart Controller.

Key Features
► Tap to cool phone down
With one tap, Coolphone can cool phone battery temperature and boost phone operation speed.
► Optimize phone battery health
Coolphone can optimize phone battery health by closing background apps, optimizing system settings and increasing phone available storage. 
► Tweat and save your own profile
Apart from three common modes, Coolphone offers the addition of preset profiles for users to set fully-customized battery saving profiles/modes. 
► Manage settings with quick shortcuts
Coolphone offers several shortcuts for easier battery consumption control, like shortcuts in homepage and shortcuts in notification panel.
► Save phone battery intelligently
With Smart Controller, Coolphone can automatically close background apps, WiFi and Data on screen lock for intelligent battery saving purpose.

Note: Coolphone can perform better and more thorough device cooling and battery saving functions on rooted mobile devices.