I have iOS, and use MacBook/Linux.
EDIT: Wow! It’s impressive how many different ways there are to achieve this. I tried obsidian git, but couldn’t get it to work as expected. Remotely Save is working perfect! Obsidian flew under my radar all these days because I thought sync was the only way. I’m looking into plugins and there’s literally a thousand plugins. It’s kinda overwhelming tbh. I’ll make another post for plug-in recommendations and workflow setup advice. Thank you all!
I use Remotely Save with my Vault, synced to a local NAS that I connect to via WebDAV (but you can use sources like OneDrive, S3, etc.). Apart from some minor conflicts like deleted folders reappearing, it’s pretty stable.