Yes, although I think they're abandoning that nomenclature because it makes no sense. The AppView layer doesn't need standardization or interoperability, it can do anything it wants, so it doesn't make sense for it to be described in the protocol.
I've seen they calling it just "app". But, while in Nostr an "app" is a client-side software that runs on your computer, there it is a "platform", an old-style "web2.0" service, like Twitter, that has a backend part and a frontend part.
Bluesky took to their heart jack (npub1sg6…f63m)'s idea that eventually Twitter would be an app on their protocol, so they designed it in such a way that 90% of the actual Twitter codebase could be reused and the Twitter frontend could be basically unchanged.
npub180…jh6w6
2026-09-18 12:26:45 UTC
in reply to nevent1q…msas
Author Public Key
npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6Seen on
wss://basspistol.orgwss://theforest.nostr1.comwss://pyramid.fiatjaf.com/inboxwss://spatia-arcana.comPublished at
2026-09-18 12:26:45 UTCEvent JSON
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"content": "Yes, although I think they're abandoning that nomenclature because it makes no sense. The AppView layer doesn't need standardization or interoperability, it can do anything it wants, so it doesn't make sense for it to be described in the protocol.\n\nI've seen they calling it just \"app\". But, while in Nostr an \"app\" is a client-side software that runs on your computer, there it is a \"platform\", an old-style \"web2.0\" service, like Twitter, that has a backend part and a frontend part.\n\nBluesky took to their heart nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m's idea that eventually Twitter would be an app on their protocol, so they designed it in such a way that 90% of the actual Twitter codebase could be reused and the Twitter frontend could be basically unchanged.",
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