It's an option... But still beholden to the arbitrary restriction apple has on data access.

Synctrain is better, and free

Now that’s interesting, thanks for sharing. Link: https://apps.apple.com/no/app/synctrain/id6553985316

I’ve tried Möbius before but wasn’t happy with it. Ended up switching to Resilio Sync (proprietary, one-time purchase) some years ago; the iOS client was better, it synced faster, and it was better at working around NAT/FW issues.

But I recently tried Syncthing again, and it seems to have mostly catches up except for the iOS client.