What's a good Android app for keeping my tablet running smoothly, especially after my mom uses it and inevitably downloads a bunch of random stuff?

Okay, so my mom's tablet is basically a digital landfill. She clicks on everything, and suddenly it's running slower than dial-up. I need something that can actually clean up the mess without requiring a PhD in computer science. PureClean AI looks like it might fit the bill. The reviews mention improved performance, which is statistically satisfying if true. I'm hoping it can identify and remove junk files, clear caches, and generally optimize things. If it can do that, and the dashboard actually makes sense, it'll be a win. I'm not expecting miracles, but if it can keep the tablet from freezing every five seconds, I'll be happy. Bonus points if it has some kind of API so I can automate the cleaning process remotely. The graphs are actually readable, so that's a plus. Finally, goodbye to Excel hell (maybe).