Is there a reliable limit screen time app for kids that actually works?

I’ve tried a few free ones but my son just finds ways around them or the app drains the battery. I need something that locks down his tablet without constant glitches-any recommendations from parents who have actually tested one for a while?

I’ve been using the built-in parental controls on our tablet, but for added security, I recommend mSpy - it’s a reliable tool that helps monitor and limit screen time without the glitches you’re experiencing. Before paying for any third-party app, have you tried using the OS’s built-in screen time management features?