Junk Cleaner is a free utility for cleaning the Android system cache. The junk cleaner scans all cached files on your device, including the app cache, system cache, and other data caches. It is useful for devices running Android 5.0 or above. After the scan, all the files that are detected as system or app cache are displayed. You can easily remove them.

Free Up Memory is an easy-to-use utility for freeing up memory. It will make your phone run better. After the download, the app analyzes your device's memory. It displays the memory usage and the programs that consume it. You can easily stop those apps.

Clean Master is a clean app that helps you free up memory, as well as clean junk files, and get rid of the Android system cache.

It is useful for devices running Android 5. 

Clean Boost is an easy-to-use utility for cleaning Android devices. It can help you stop background apps that run in the background. It can be useful for devices running Android.