CPU Cooler - Cooler Master, Phone Cleaner is professional phone cooler master! Cool down your phone and reduce CPU usage. Main function: ️ CPU Cooler. ️ Real-time CPU temperature. ️ Battery saver, save power of your mobile. ️ Phone cleaner, boost clean Android phone. ️ Speed booster, speed up your phone. ️ RAM cleaner, memory cleaner. ️ Cache cleaner.