Seemingly there isn't, which is a shame because a lot of people would benefit from it. Practically everyone has a smartphone and people's photo libraries keep growing and growing. When I was young and still naïve about the big G, Google photos was awesome but now it doesn't make sense to hand over all of my photos for them to mine and have to pay for storage too.
Right now my setup involves using Syncthing to get photos from my phone to my RPi-based NAS, where I'm running a Photoprism instance. On paper it looked great but Photoprism lacks polish and some important features. On the app side I planned to use PhotoSync to sync with Photoprism but didn't bother downloading it when I found out it wasn't open source and the Android version was ad-supported. A solid Android app that uses Photoprism as a backend and is as smooth and fast as Google Photos would be great to have.
Right now my setup involves using Syncthing to get photos from my phone to my RPi-based NAS, where I'm running a Photoprism instance. On paper it looked great but Photoprism lacks polish and some important features. On the app side I planned to use PhotoSync to sync with Photoprism but didn't bother downloading it when I found out it wasn't open source and the Android version was ad-supported. A solid Android app that uses Photoprism as a backend and is as smooth and fast as Google Photos would be great to have.