K.Q. Dreger:

Ideally, I can use your iCloud accounts to sync the current sheet back and forth, but I have speed concerns that I haven’t been able to test yet. I’ve long thought that a syncing service should be fast enough that all changes are committed and sent to the server by the time a user can close the app or shut their laptop lid/smart cover. If CloudKit isn’t able to provide that sort of performance, I might need to look at a few other options. Whatever I end up doing though, it’ll be totally seamless for the users; you’ll turn it on, and it’ll just work.