Root Booster has been downloaded and installed by over 5M users and its latest update is dated Dec 2, 2018. This application is often downloaded by Samsung and LG users. Download the .apk installation package of Root Booster 2.9.1 that is free and check out users' reviews on Droid Informer. The file size is 2 MB and the app is designed for Android 3.0 and higher.
As users mention, the big pluses of the app are a user-friendly interface, useful features, good performance, constant updates, a screen freeze, battery saving mode and its low cost. The way users see it, the weak sides of this application are stability issues and annoying ads.