Been tempted to get Obsidian Sync for a while to make it easier to use across different OS'. Realised that I could get educational discount so finally paid up. Seems to work well so far.
Also there is a good plugin I used on my main device that then creates a backup that goes into my cloud storage. Obsidian rightly says not to think of the Sync as a backup.
@CrazyBlue If I ever move away from Android to iOS (unlikely for a bit, I just bought a Galaxy Watch this year AND a new battery for my current phone), I think I'd pay for Obsidian Sync. From what I've read and tried, my SyncThing set up just doesn't play nice with iOS.
@srgower I had used some app (forgot the name) on android to sync without paying for it. But it was quite clunky. For me it's that I don't want my personal cloud account on my work laptop. Or try and find a work around for that same cloud account on my other Linux laptop. This is the nearest solution for me. Or the most efficient option across three separate non-apple OS'.