My Android phone gets memory full very often. Is there an app other than clean master to install and free some space? I mean it should be light weighted and efficient.
I do not know applications other than Clean Master, try to uninstall applications that you do not use much
If you root your device it would be much efficient. Removing all the bloatware will free up more space than any cleaning app. I suggest you consider that.
How does this application differ from competitors?
I use these 3:
Empty Folder Cleaner
SDMaid works good but needs root access for deep cleaning. Check https://odindownload.com/root-android if you prefer root your device to get the functionality of the app
Cache Cleaner – DU Speed Booster