[lern_too_spel]

That alternative frontend is the YouTube Kids app. It has exactly the functionality you want. I agree that no other video apps provide this functionality, but no other video apps have very many videos that I would show a kid anyway, so it doesn't make sense for them to implement.

[vundercind]

Oh, I’d seen the YouTube kids accounts and assumed it was like that (80% as much awful spammy shit as adult-YouTube, 5% as much good content—totally worthless) so hadn’t looked at it.