Not parent, but I have had a good experience using SyncThing to keep my obsidian notes synchronized across devices.

I have a server at home where I self host a few services and access over tailscale so I have a device that is “always on” and syncing, but prior I used a $5 droplet for much of the same. Can recommend.

I second SyncThing in combination with Obsidian. Works like a charm.

I just setup Obsidian a couple days ago and have been using https://github.com/vrtmrz/obsidian-livesync which seems to work ok. I'm curious if SyncThing would be preferable. How does it handle conflicts? How often does it sync? Does it drain the battery on mobile if it syncs too often?

I cant speak to mobile personally as it is not a use-case for me but as far as conflicts SyncThing works great.

I have been running it for a little over a year now across three primary devices and the server and I don’t think I’ve seen more than a handful of conflicts. Don’t remember a single one with my obsidian directory which is currently ~500 files (markdown/pdf etc).

I’ve found that the official Obsidian Sync solution performs well and has no issues with conflicts, unlike iCloud Drive which I used prior. It does feel pricey for a single feature, but I just frame it as valuable support for an amazing product that I’d otherwise be paying nothing for. After futzing around with sync for a while I was happy to throw some money at the problem and move on.

I use iCloud to sync. Just locate the vault in an iCloud drive folder called Obsidian. Works beautifully to sync between my different Macs and iOS devices.

Drop the folder into Nextcloud.