Yup! I use Mobius on iOS to sync everything I want, including random one off file transfers, but mostly to keep my Keepass database and Obsidian vault in sync across devices. It works really well, despite apple making it super difficult to run consistently in the background. As long as you open the app every so often, it’s seamless and reliable.

Syncthing.

Same, Syncthing is amazing. I use it with Mobius Sync on iOS and have it synching my keepass, Obsidian vault, photos, and a folder for random file transfers between devices. It’s so much better, faster, and more stable than all the most popular corporate cloud providers.