SimpleX Chat

SimpleX Chat apps are 4 years old today! - 2M+ app downloads - 300-500K active users (estimated from store statistics - no accounts or any user IDs) - 1000+ network routers Huge thank you to everybody who made this journey possible: @Seth For Privacy, @Privacy Guides, @704d2ec5…57b2bd54, @Techlore @jack and everybody else who used, promoted and supported SimpleX Network. Coming soon: - channels - new UX - non-profit governance of SimpleX Network The first release announcement: https://simplex.chat/blog/20220308-simplex-chat-mobile-ap… How SimpleX Network Consortium will work: https://github.com/simplex-chat/simplexmq/tree/master/rfc… Why we are building SimpleX Network: https://simplex.chat/why/

You can create a SimpleX Chat chat-bot with 17 lines of JS code using the new Node.js library Beta version: https://npmjs.com/package/simplex-chat/v/6.5.0-beta.4.4 Source code: https://github.com/simplex-chat/simplex-chat/tree/master/… To run this example with Node.js: npm i simplex-chat@6.5.0-beta.4.4 node ./node_modules/simplex-chat/examples/squaring-bot-readme.js

Happy New Year! Thank you all for your incredible support of SimpleX network in 2025: - to users for over 2,000,000 app downloads since launch. - to enthusiasts for hundreds of community hosted servers. - to group owners for thousands of groups. - to businesses and projects using SimpleX Chat for customer and user support. - to developers who created integrations and libraries for SimpleX network. - to all who donated, and especially to Vitalik Buterin for his game-changing donation of 128ETH. 2026 will be great for privacy and for SimpleX network!

A big news for SimpleX Chat privacy and security: Android apps released via GitHub and F-Droid are now 100% reproducible! It means that you can easily verify that the app is secure, even if the download site was hacked. From v6.5 our release process is: 1) build Android apps on two independent machines and confirm they are 100% identical; 2) cryptographically "sign" them; 3) add signature files to the release page so you can verify. v6.5 beta.3 release: https://github.com/simplex-chat/simplex-chat/releases/tag… Server and Linux desktop builds were already reproducible, and Android APKs are now as secure. Anyone can check it themselves - no coding needed, just follow our simple guide to verify the app is genuine or run the build yourself: https://simplex.chat/reproduce/

Our users asked many questions about Chat Control, as discussions were restarted in the EU this week. SimpleX Chat is an open-source app where users control the code and the servers they use. Therefore it is impossible to implement any client-side scanning, and it will not happen. If the law is passed, two options are possible: - we might need to stop offering preset servers to the EU users. - we will not need to change anything - this is the most likely outcome. Our operations are always consistent with our Privacy Policy (https://simplex.chat/privacy), and we would rather shut down than do anything that contradicts this agreement with our users.

"Code alone doesn't cut it. Not code alone, not code widely distributed, not even code widely used. Some measure of toleration in society for activities conducted in private is necessary for long term success. Not convenient, not easier, but necessary." Eric Hughes, "Kid Gloves or Megaphones" (email to Cypherpunk mailing list), 1996 https://diswww.mit.edu/MENELAUS.MIT.EDU/cpunks/52130

Huge thank you to all for feedback and suggestions on Community Vouchers plan! FAQ: 1. Can we still use our servers? Yes, and it will be improved (read full FAQ). Community Vouchers are completely opt-in, and intended only for server payments by the large groups. 2. How is it possible to provide privacy on public blockchain? In the same way as we provide private communications on the public Internet - by using per-purchase addresses, not per user as in wallet apps, and by using zero-knowledge proofs to verify ownership. 3. How many Community vouchers will be pre-sold and available during public sale? None! No Community Vouchers will be made available to any insiders or to the public sale – it would have made them investment contracts. Community Vouchers are restricted utility tokens. 4. What problems do vouchers solve? - unlinkability of purchase to usage, thanks to zero-knowledge proofs. - trust to server operators - funds will be only unlocked to them after infrastracture is provided. - revenue sharing with network - it will be codified in blockchain contract. 5. Are you considering other blockchains? Yes, as long as they are sufficiently mature, and natively support smart contracts and zero-knowledge proofs. Send your suggestions! Read more details in the updated Community Voucher FAQ at http://simplex.chat/token

We plan to adopt zkEVM networks for problems that require network-wide consensus: - public names - server registry - server infrastructure payments using Community Vouchers represented by SMPX utility tokens on some L2 network TBC Please read the plan and FAQ here: https://simplex.chat/token/ You can get a free NFT on Ethereum mainnet that will provide access to testnet when launched - planned for 2026.

Join & create SimpleX groups! The directory can now be viewed on our website: https://simplex.chat/directory

An essay explaining why we don't plan to use MLS: https://www.poberezkin.com/posts/2025-08-12-mls-the-naked… A sidenote, is that Nostr's Whitenoise avoids its main problem. TL;DR: MLS security model is "Trust me bro".

SimpleX Chat now has a much better way to make connections – available in v6.4 beta release! - Short links and more secure - See the name before connecting - Send messages without waiting for your contact to be online Read more in the blog post: https://simplex.chat/blog/20250703-simplex-network-protoc… v6.4-beta is available on PlayStore, TestFlight and GitHub.

SimpleX Chat is #1 messenger recommended by Whonix! https://www.whonix.org/wiki/Chat#Recommendation

The comparison of 6 messengers in c't magazine (Heise.de) They ranked SimpleX Chat as the best for privacy and security! https://www.heise.de/select/ct/2025/9/2505715264990543311

Livestream on X: February 11, 5pm UTC, 9am PT. SimpleX network: Power to the People! Evgeny and Dan Keller (co-founder of Flux) will talk about: - extreme decentralisation, - Flux servers in the apps, - future commercial model, - large content channels, - moderation & freedom of speech. Join us at https://x.com/SimpleXChat

Opt Out podcast: Improving SimpleX Chat w/ Evgeny from SimpleX and Dan Keller from Flux https://optoutpod.com/episodes/improving-simplex/

Privacy-preserving content moderation - preventing abuse of SimpleX network without any compromise to users' privacy and end-to-end encryption. https://simplex.chat/blog/20250114-simplex-network-large-… This is our response to #ChatControl ideas - no need to scan content to moderate it. Post your comments!

SimpleX Chat v6.2 is out! The app now includes both servers that we operate and servers independently operated by Flux – thanks to Daniel Keller and Flux team! More privacy and decentralization for all users! Also in v6.2: - business chats! - better UX: open chat on first unread (not on iOS yet), show who reacted. - bette iOS notifications! Read more: https://simplex.chat/blog/20241210-simplex-network-v6-2-s…

Servers operated by Flux added to SimpleX Chat apps (v6.2-beta.1) to improve metadata privacy – a game changer for SimpleX network users! https://simplex.chat/blog/20241125-servers-operated-by-fl… Huge thanks to Daniel Keller (Flux CEO and co-founder) for supporting our vision for extreme decentralization of communications!