[Request] app to keep the screen on while you're giving your device to someone else

I think the title speaks for itself. Just an app that you can quickly open while you're sharing your phone with someone else, that keeps the screen on. You can close it when you get it back. Would be very handy. I searched for it on the app store and the only ones I found would change settings that require hold back permission(a permission that if you're not in control of the phone it's not easy to get). <br><br>I was in a situation where I had to give my phone to my mom to look at a picture for a second, and she locked the phone and then couldn't get back into the app because of this reason.