If you choose to straddle ecosystems there really isn't that much that the likes of Obsidian can do to help though (especially when it comes to iPhone). I use O

If you choose to straddle ecosystems there really isn't that much that the likes of Obsidian can do to help though (especially when it comes to iPhone). I use Obsidian with Mac + Android (Synced via Dropbox, and backed up using git) and it works. Little bit of manual setup, but I can handle that. At the end of the day Obsidian is just a directory structure of Markdown files. If needed, you can edit them with Obsidian (say using the Dropbox app).