I've managed to successfully install Galaxy Labs on the A30 and on the A20, then I installed App Booster, one of the four modules within the app. File Guardian works great as well, but I unfortunately couldn't get Battery Tracker and Battery Guardian to work. They are probably exclusive to the Note Series or Android 10. App Booster took some time to go through and optimize all my apps, and my devices feel way more snappier and buttery responsive. Love it when Samsung develops great in-house applications that are functional and easy to use. One Hand Operation + is another incredibly useful Samsung app that can be used to mimic Android 10's back swipe gestures. Hope Android 10 and One UI 2.0 are just as well put together and polished.