[LordDragonfang]

I can't vouch for it because I don't have any iOS devices new enough to support it, but supposedly you can also set it up to sync via git:

https://forum.obsidian.md/t/mobile-setting-up-ios-git-based-...

[nvrspyx]

One thing to note is that this requires manually pulling and pushing in Working Copy as well as paying to unlock pro features ($20 one-time payment) to push to a remote repository.