Managed to sync my iCloud drive Obsidian vault to my Android Obsidian using a convoluted Google Drive + DriveSync matchup. Too cheap to afford Obsidian Sync. https://files.mastodon.social/media_attachments/files/111/130/184/216/863/065/original/533a73a34c479ac7.png
I followed this guide https://www.makeuseof.com/sync-obsidian-vault-across-devices/