SimpleX Chat (f-droid version)

Download SimpleX Chat (f-droid version) APK

chat.simplex.app · by SimpleX Chat

Latest Version: 6.4.4 • Updated: Jun 03, 2026

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About SimpleX Chat (f-droid version)

SimpleX - the first messaging platform that has no user identifiers of any kind - 100% private by design! Security assessment by Trail of Bits: simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.html SimpleX Chat features: - end-to-end encrypted messages, with editing, replies and deletion. - disappearing messages with opt-out per contact/group. - NEW message reactions. - NEW delivery receipts, with opt-out per contact. - multiple chat profiles, with hidden profiles. - app access and self-destruct passcodes. - incognito mode - unique to SimpleX Chat. - sending 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. - single-use and long-term user addresses. - secret chat groups - only group members know it 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). - private instant notifications. - encrypted portable chat database - you can transfer your chat contacts and history to another device. - 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 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 ( github.com/simplex-chat/simplex-chat/issues ) Read more about SimpleX Chat at simplex.chat Get source code in our GitHub repo: github.com/simplex-chat/simplex-chat Follow us on Reddit (r/SimpleXChat/), Twitter (@SimpleXChat) and Mastodon ( mastodon.social/@simplex ) for the latest updates.

Frequently Asked Questions

Yes. Every SimpleX Chat (f-droid version) APK on APK.now is automatically scanned and the cryptographic signature is verified against the original publisher's certificate (SimpleX Chat). Files that fail verification are removed before they ever reach the catalog.

Enable 'Install from unknown sources' for your browser (or the file manager you use to open the APK) under Settings → Apps → Special access. Tap the downloaded SimpleX Chat (f-droid version) APK, confirm the prompts, and Android installs it just like any app from the Play Store.

The latest SimpleX Chat (f-droid version) version available on APK.now is 6.4.4. We track new releases from SimpleX Chat continuously and add them to the catalog as soon as they pass verification.

Yes — every SimpleX Chat (f-droid version) APK and every version on APK.now is free to download. We never gate downloads behind sign-up, surveys, or paywalls.

APK.now keeps a full archive of every SimpleX Chat (f-droid version) release, including older versions that the Play Store has already replaced. The APKs work on devices without Google Play Services (Huawei, GrapheneOS, Amazon Fire) and are signature-verified so you can be confident the file is genuine.