Krypta Chat: Secure Messenger

Krypta Chat is a private messenger with end-to-end encryption. No phone number, no email, no trackers, no ads. If you like, Krypta opens as a fully working calculator, and only your secret code opens your chats.

NO PHONE NUMBER, NO EMAIL
You don't need an account with your name. Krypta creates an anonymous ID; you add contacts by QR code or ID. Strangers can only send you a request that you have to accept.

A CALCULATOR WITH A SECRET (OPTIONAL)
During setup you can disguise Krypta as a calculator that really calculates. Your own secret code followed by "=" opens your chats. A separate erase code deletes everything instantly if you ever need it.

DELIVERED WITHOUT A TRACE
Every message is end-to-end encrypted: only you and the person you write to can read it, not the server and not us. Messages are deleted from the server as soon as your contact has received them. Disappearing messages, delete after reading, view once and password-protected messages let you decide how long something exists.

EVERYTHING A MESSENGER NEEDS
• One-to-one and group chats
• Photos, videos, voice messages and files, encrypted
• Replies, reactions, editing, search, mute, pin, archive
• Notifications show who wrote, never what they wrote

PROTECTION FOR YOUR IPHONE
• Face ID and an additional vault password
• Emergency button deletes everything instantly if you choose
• Automatic erase if you don't open Krypta for a period you choose
• Protection against screenshots and screen recordings

VERIFIABLE SECURITY
X3DH and Double Ratchet, XChaCha20-Poly1305, Argon2id. Safety numbers and key transparency show whether anyone has come between you.

NO TRACKERS, NO ADS
Krypta contains no analytics tools and no advertising.

SAFE TOGETHER
Report and block contacts and messages right in the chat. We review every report.

Krypta Chat is developed by Connexa GmbH in Switzerland.
Privacy policy: https://connexa-gmbh.ch/krypta/datenschutz