[syvl]

Unfortunately not. I can understand if that's a dealbreaker for you.

There are a few reasons we're not using iCloud: 1. We eventually intend to support other platforms, like Windows and the web. 2. Though they're admittedly rare, we've heard some iCloud horror stories. @DanielDe (OP) lost some files using iCloud Drive, so it's hard for us to trust it. 3. We wanted much tighter control over syncing to provide the particular experience we were aiming for. Things like live cursors for shared lists, and the way our offline experience works, are tightly tied into our sync engine.

[sgt]

Never had an issue with iCloud in at least 5 years, so I believe it is now probably ultra stable.

It is not necessarily a deal breaker, one can always just export/backup regularly.