A messenger that doesn't need an account, a phone number, or even an internet connection. Encrypted end-to-end before it ever leaves your device.
Free · encrypted · never on a server.
End-to-end encrypted via the Signal Protocol · X3DH + Double Ratchet · see the architecture →
Six features that aren't features anywhere else — they're the floor.
Messages travel peer to peer. There is no company server to subpoena, no database to breach, no authority to comply with.
X3DH + Double Ratchet. The same cryptography trusted by journalists, activists, and governments worldwide.
Bluetooth LE mesh delivers messages with no internet. At a protest, on a plane, in a blackout — anywhere.
Route messages through the Tor network for anonymised delivery. Your IP is never exposed to peers.
ECIES-encrypted email between Whispr users. Threads, reply-all, forward — with full E2EE, no central server.
Your identity is a locally-generated Ed25519 key pair. No email, no phone, no registration of any kind.
HOW IT WORKS
01
Your message is encrypted on your device before it ever leaves. Only the recipient's Ed25519 key can decrypt it.
02
The app automatically picks the fastest available route — direct LAN, Tor hidden service, or BLE mesh.
03
Only your contact's device decrypts the message. Not us, not your ISP, not anyone in between.
TRANSPORT LAYER
When on the same Wi-Fi, messages travel directly — sub-second delivery, zero internet required.
Route through Tor hidden services for anonymous, censorship-resistant delivery across the internet.
Bluetooth Low Energy mesh. Send messages nearby with no Wi-Fi, no internet, no infrastructure at all.
Whispr uses the same cryptography Signal uses, with one difference: there's no server in the middle. Even we couldn't read your messages if we wanted to.
Whispr ships continuously. Here's what's in the pipeline.
IN PROGRESS
Pluggable-transport binary that disguises Tor as TLS, defeating deep-packet inspection in censored networks. Vanilla bridges already shipped in v1.1.14.
IN PROGRESS
End-to-end encrypted peer-to-peer calls over LAN and Tor. No relay server, no recording, no third party.
PLANNED
Multi-party encrypted group chats using a shared group key, derived without a central key server.
PLANNED
Per-message timers. Messages evaporate from both devices after the set duration — no trace left.
Available for Android. iOS coming soon. No account. No tracking. Just install and go.
Full release history: changelog
USING WHISPR WHERE TOR IS BLOCKED
Some networks block Tor. If your messages don't deliver, install Whispr and open Settings → Network → Bridges. Tap the (i) icon there for a full step-by-step guide to setting up bridges for your region.
The instructions live in the app itself so you always have them with you, online or offline.