Hi everyone! I’d like to share PsstPsst, a messaging app I’ve been working on over the past three months through vibe coding.
It’s intended for staying in touch with friends and family, and supports iOS, Android, macOS, Linux, and Windows. Releases are currently available for all platforms except iOS.
I haven’t had a chance to test the Linux and Windows builds myself yet. If you try either and run into any problems, I’d really appreciate hearing about them.
PsstPsst is built on NIP-17 with NIP-4e, which separates encryption keys from identity keys. This means it isn’t compatible with most existing Nostr clients.
You don’t need to think of it as a Nostr DM app, though. I’ve tried to keep Nostr terminology out of the app and make it approachable on its own. My hope is that people can generate a fresh key and use it with their friends and family.
Why NIP-4e?
With a separate encryption key, the app doesn’t need to repeatedly request encryption and decryption operations from your identity key. This makes it possible to use the app with a bunker remote signer.
Encryption keys can be rotated periodically, so a leaked key won’t expose your entire message history.
A few things I’d like to add over time:
- Small group chats, likely limited to 10 people or fewer. NIP-17 isn’t well suited to large groups, and small circles feel like a good fit for the app’s focus.
- Voice and video calls.
- A built-in browser for napps.
- Communication without an internet connection, using FIPS.
There’s still plenty to improve, but I hope some of you might find it useful. If you feel like giving it a try, I’d be grateful for any feedback or bug reports. Thanks for taking a look!
PsstPsst
PsstPsst · Decentralized, end-to-end encrypted messaging
A decentralized, end-to-end encrypted messenger for iOS, Android, macOS, Linux, and Windows. No phone number or email required.
