No number, no account
No phone number, no email, no sign-up, not even an account ID. Nothing about you is needed to start writing.
App Details
A private messenger with no phone number, no email and no account — contacts are added by scanning a QR code in person.
Each contact gets a brand-new key pair created just for that connection, so text, photos and files up to 25 MB are end-to-end encrypted with standard, well-studied cryptography (X25519, HKDF-SHA256, ChaCha20-Poly1305). Messages are deleted from the server as soon as your contact's phone has them, and the server cannot tell which contacts belong to the same phone. Keys and messages live only on your phone, so there is no cloud backup: on a new phone you add your contacts again. Notifications show only the contact's name, never the message text. No ads, no tracking, no third-party analytics, and all your data can be deleted from the app with one tap. Made in Aachen, Germany, under EU data protection law.
Contacts by meeting in person
Every contact starts with an in-person QR scan, so nobody can swap keys in between. Each code is new, works once and expires after 30 minutes.
Sealed before it leaves
Messages, photos and files are encrypted on your phone with a separate key pair per contact. We can't read them, and neither can anyone who gets hold of our server.
