I haven’t tried photoprism in a while, but when I tried it, it wasn’t even close.

Photoprism seems more suited if you’re a photographer to index your professional work where immich aims to be a google photos/icloud alternative.

Immich has native mobile apps to do the syncing and provide a (great) interface for search, it has much better multi-user support, including sharing albums, and much more features than I’m willing to type out here.

The only thing missing, for me at least, is better support for local files to eliminate the need for another gallery app/file picker.