For low RAM phones, ie less than 2 GB or 1 GB or 500 MB, or less than 500 MB.
Most of our device needs restart after some period of time to free the RAM used by most of the applications.
Less than < 2 GB RAM Booster Pro is an app that every low RAM phones, i.e 2 GB or 1 GB or 500 MB, or less than 500 MB should have installed. I will work on 3 GB RAM devices also but 3 GB devices won't show