Photos on Android Phone

Does anyone know of an app where I can show someone a photo on my phone and they can't go anywhere else?

I know about the "vaults" where you can hide your private photos, but I'm looking for the opposite, where someone only sees what I show them, and can't look at any other photos or go to other apps on my phone

Thanks!

Use Focus photo sharing app.

You can limit which photos you share and set it to lock and require a pin if someone tries to exit to your home screen.

Set the photo as your lock screen?

Thank you, I had actually heard of that one but I couldn't find it anywhere on Google Play