@Olomorn@djlink Hey, yes. That's what I use. It's also the only sane option that triage photo via exif date (and I have hundreds of Giga of family photos going to 1900). Yes, the small editor is on the Nextcloud app.
Unfortunately, on the mobile side, the Memories client use the Nextcloud sync app. It's not a 2 way sync (if my wife edit one of our photos, it's not sync back on my phone).
But good point for the Memories Nextcloud app: it retains the exif after edition, and date editor is good.