SimpleX Chat vs Krypta Chat

SimpleX - the first messaging network without user identifiers of any kind (not even random numbers) - 100% private by design! Security assessments by Trail of Bits: 2022: https://simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.html 2024: https://simplex.chat/blog/20241014-simplex-network-v6-1-security-review-better-calls-user-experience.html SimpleX Chat features: - quantum resistant end-to-end encrypted messages, with editing, replies and deletion. - disappearing messages with opt-out per contact/group. - message reactions. - delivery receipts, with opt-out per contact or group. - multiple chat profiles, with hidden profiles. - app access and self-destruct passcodes. - incognito mode - unique to SimpleX Chat. - end-to-end encrypted images and files. - voice messages up to 5 minutes – also end-to-end encrypted. - "live" messages – they update for all recipients as you type them, every few seconds - unique to SimpleX Chat. - connect via one-time invitation links or via long-term public addresses. - secret chat groups - only group members know the group exists and who is the member. - end-to-end encrypted audio and video calls. - connection security code verification, for contacts and group members – to protect from man-in-the-middle attacks (e.g. invitation link substitution). - end-to-end encrypted push notifications (they contain only encrypted meta-data, not the actual content). - encrypted portable chat database - you can transfer your chat contacts and history to another device. - all local files and media are encrypted by default. - animated images and "stickers" (e.g., from GIF and PNG files and from 3rd party keyboards). SimpleX Chat advantages: - privacy of your identity, profile, contacts and metadata: unlike any other existing messaging platform, SimpleX uses no phone numbers or any other identifiers assigned to the users - not even random numbers. This protects the privacy of who you are communicating with, hiding it from SimpleX platform servers and from any observers. - complete protection against spam and abuse: as you have no identifier on SimpleX platform, you cannot be contacted unless you share a one-time invitation link or an optional temporary user address. - full ownership, control and security of your data: SimpleX stores all user data on client devices, the messages are only held temporarily on SimpleX relay servers until they are received. - decentralized proxied peer-to-peer network: you can use SimpleX Chat via your own relay servers and still communicate with people using pre-configured or any other SimpleX relay servers. - fully open-source code. You can connect to anybody you know via link or scan QR code (in the video call or in person) and start sending messages instantly - no emails, phone numbers or passwords needed. Your profile and contacts are only stored in the app on your device - relay servers do not have access to this information. All messages are end-to-end encrypted using open-source quantum resistant double-ratchet protocol; the messages are delivered via relay servers using open-source SimpleX Messaging Protocol. Please send us any questions via the app (connect to the team via the app settings!), email chat@simplex.chat or submit issues on GitHub (https://github.com/simplex-chat/simplex-chat/issues) Ream more about SimpleX Chat at https://simplex.chat Get source code in our GitHub repo: https://github.com/simplex-chat/simplex-chat Follow us on X/Twitter (@SimpleXChat), Reddit (r/SimpleXChat/) and Mastodon (https://mastodon.social/@simplex) for the latest updates.

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