4 stars: The only problem is when I open some of the apps it says something went wrong and I have to do the pattern to open it. I have tried a lot of different things but no luck. Besides that it is great. I have the premium so no adds.
3 stars: Some problems with this app. I purchased the Premium version but it keeps prompting me to re-enter the password multiple times in the same session, despite my enabling the settings that are supposed to prevent this. I emailed the developer and eventually got a response, suggesting I enable RAM optimization, so we'll see if that works. And if you don't buy the app, you'll see ads and it'll lock almost constantly after a week or two usage.
3 stars: Bought this app in order to lock a volume control app to prevent my son (autistic and hates earphones) from blaring his devices. My son uses split screen and the lock app had just enough pause before blocking the app to allow him to get in to the volume control app (which I have hidden but can't remove from recent apps in split screen!). I think the pause issue may be due to split screen but in any case, it failed to meet my needs.
2 stars: I'm not sure whether it was an update or Android 11, but I have pattern lock with a pin number backup. I can select the pin number option and it will give me access to the app without having to enter the pin. The last review said that the most recent version didn't work on Android 10. I've fixed it since but this bug/feature is pretty ridiculou...