Following up on this tweet here
I am really fascinated by the instantaneous sync between two iOS devices using 1password.com account. The sync happens right away. It even updates a filtered list of records with the new entries unlike every other password manager app or even apps in general where they wouldn’t reflect any update unless you clear the filter and reapply. I have a feeling that this level of responsiveness cannot be achieved with just silent push notifications (at least I have never been able to sync reliably with them). Apple Notes app for example uses CloudKit I believe and I would assume that it must be something similar which you have for non icloud sync. It is almost as if something like firebase or websockets is powering the sync. So I am really curious as how you implemented your sync at scale if someone in the engineering is okay discussing.