As far as I know, damus notedeck is the only client that has the ability to reveal 0 information about your nostr activity to relays, via the local relay model.

The idea is since the UI is only updated from local subscriptions, you can create a remote filter that reveals no information: {}. and simply negentropy sync everything in the past hour/day (sync is wip still)

This will stream all updates to your local node and ingest the notes into your local db, updating the real, private local subscriptions on your ui.

This is kind of like a bitcoin node: monitoring all incoming blocks and updating your local balance, without revealing anything about your wallet to the network.

nostr:note1havrn83376qtjgrnp63zc4wqehj972l3jd49jwy5g6tmn3g64guqgtdnxa