LibreTube. Uses Piped as backend and has pretty much all the features that NewPipe has, including SponsorBlock.

You can create an account on one of the numerous Piped instances and log in with LibreTube, to have things synced. Since Piped is open source, you can even selfhost it, if you know how. My Lemmy instance (FOSSware) also has a Piped instance.

I’m trying to add your instance to the LibreTube app. It’s asking for a URL to instance API. Where can I find this?

api.y.donttrackme.fossware.space