Battery Saver & App Locker is a FREE, highly efficient battery saver/junk cleaner app for your Android phone or tablet. This app helps you save battery power and extend battery life by removing junk files, leftover caches, and obsolete apks. It also provides you with a cleaner home by finding and deleting junk files, and it makes your device more secure by protecting your privacy with a passcode and pattern lock. It is also capable of locking your apps, and it can lock the gallery, contacts, SMS, and more. This battery-saver app can make your phone more secure and save battery power at the same time.