Decentralized, end-to-end encrypted messaging. No phone number required. PsstPsst is a free, open-source messenger for Android, iOS, and desktop. Your cryptographic keys are your account: get started without a phone number or email address, and exchange encrypted messages over Nostr or nearby Bluetooth. Private conversations Send end-to-end encrypted one-to-one messages, photos, videos, files, and voice messages. Keep conversations flowing with replies, reactions, and forwarding. Your keys, your account Create an identity without a central account provider. Use an optional Nostr name to make it easier for people to find you. Stay close, even offline Exchange messages and files with compatible PsstPsst peers over Bluetooth Low Energy, without internet access. Connect your wallet Connect a non-custodial Lightning wallet through Nostr Wallet Connect. Make it yours Choose light or dark mode and your preferred accent color, with layouts that adapt to mobile and desktop screens. Before you start - Messaging currently supports one-to-one conversations. Private messaging requires compatible peers; support for Nostr alone does not guarantee interoperability. - Nearby requires Bluetooth permissions and hardware/OS support. Range, transfer speed, and background availability depend on your device. - Android background notifications use a foreground service and are subject to battery restrictions. Delivery is best-effort. - Back up your identity key and use key transfer and chat-history export/import when moving devices. An identity-key backup alone does not guarantee recovery of encrypted chat history. PsstPsst is released under the MIT License. Source code, protocol documentation, and the security review status are available in the public repository. Website: https://psstpsst.chat Privacy policy: https://psstpsst.chat/privacy/ Source code: https://github.com/codytseng/psstpsst Security: https://github.com/codytseng/psstpsst/blob/master/SECURITY.md
First release: Sep 13, 2026, 6 total releases.
Most recent release: Sep 26, 2026.
Appears in 1 app stack.
4,321 sats / 4 zaps received in the past year.
Sats Received
Underlying data available via MCP: app_zaps, app_releases.
Zap Count
Underlying data available via MCP: app_zaps, app_releases.
Releases
- Sep 26, 2026 26.9.1- Pay Lightning requests with any compatible wallet app, without connecting one first. - More reliable message delivery after network interruptions. - Scan a wallet QR code to connect and switch wallets instantly. - Other small fixes and improvements.
- Sep 25, 2026 0.2.4- Browse long chats more smoothly. - Report abusive accounts directly from their profile. - Resize split panes on touch devices. - Refined the emoji picker on mobile and desktop. - Reduced accidental conversation swipes. - Improved avatar loading consistency across the app. - Improved Back/Escape behavior for menus and replies.
- Sep 21, 2026 0.2.3- Improved message list scrolling performance.
- Sep 18, 2026 0.2.2- Swipe either way on a message to reply. - On desktop, start typing to jump straight into the message box. - Choose whether unread message counts appear in Settings. - Enjoy a media gallery that adapts better to the available space. - Stay in place more reliably while scrolling quickly or replying in long chats. - See conversation times update while the app remains open. - Fixed occasional message ordering issues when messages share the same timestamp.
- Sep 14, 2026 0.2.1- Save photos, videos, and other attachments to your device on mobile and desktop. - See in-app banners for new messages while PsstPsst is open. - Send and retry messages more reliably, with clearer feedback when delivery fails. - Fixed crashes affecting Android, app startup, voice recording, and navigation. - Fixed Android back navigation in the media viewer and chat composer. - Polished video playback and message action menus.
- Sep 13, 2026 0.2.0First public release of PsstPsst. - End-to-end encrypted, one-to-one messaging over Nostr - Nearby messaging over Bluetooth without internet access - Photos, voice messages, files, replies, and reactions - Light and dark themes with selectable accent colors - Identity transfer and chat-history export/import