Firstly please install the main app "RAM Cleanup":
https://play.google.com/store/apps/details?id=com.kosajun.easymemorycleaner

This is No-Screen (small appearance) option for RAM Cleanup.
You can use small appearance function respectively for cleanup from notification bar, auto cleanup and cleanup from shortcut.
No-Screen needs to be activated from settings menu of RAM Cleanup(Ver.3.4 or later) after the installation of this option.

!Please use tryout for checking availability on your device before purchasing the option.

Note: Main app checks whether this app is installed or not for the start cleaning.