I love the simplicity and power of Obsidian. It also lets me sync desktop and iPhone for free via iCloud.
This [source](https://help.noteplan.co/article/86-how-to-force-sync) says that opening the iCloud Drive on Finder will trigger sync. On the mobile Obsidian app, you can flicker the page down to download updated data, obviously it will only work if the more recent data was uploaded.