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Download SimpleX Chat (f-droid version) 6.4.11 APK
Target: Android 15 (API 35)
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What's new in SimpleX Chat (f-droid version) 6.4.11
New in v6.4-6.4.10:
- new UX to connect.
- review new group members.
- approve contact requests from group members.
- UI for bot commands.
- markdown hyperlinks.
- option to remove tracking from links.
- reduced battery usage.
- new languages: Catalan, Indonesian, Romanian and Vietnamese.
New in v6.4.10:
- improve image and video messages.
- improve error handling.
Read more: simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html
About SimpleX Chat (f-droid version) 6.4.11
SimpleX - the first messaging platform that has no user identifiers of any kind - 100% private by design!
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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.
SimpleX Chat (f-droid version) 6.4.11 variants
This release comes in several variants (we currently have 2). Consult our handy FAQ to see which download is right for you.
Version:6.4.11
Uploaded:April 4, 2026 at 7:00PM UTC
File size:83.00 MB
Downloads:41
Version:6.5.4
Uploaded:June 3, 2026 at 8:24PM UTC
File size:88.14 MB
Version:6.5.3(352) for Android 8.0+ (Oreo, API 26)
Uploaded:May 29, 2026 at 10:17AM UTC
File size:80.34 MB
Downloads:13
Version:6.5.2(350) for Android 8.0+ (Oreo, API 26)
Uploaded:May 16, 2026 at 8:44AM UTC
File size:80.22 MB
Downloads:11
Version:6.5.1(348) for Android 8.0+ (Oreo, API 26)
Uploaded:May 8, 2026 at 12:21AM UTC
File size:80.26 MB
Downloads:7
Version:6.4.11(337) for Android 8.0+ (Oreo, API 26)
Uploaded:April 2, 2026 at 4:17PM UTC
File size:70.80 MB
Downloads:10
Version:6.4.10(334) for Android 8.0+ (Oreo, API 26)
Uploaded:March 9, 2026 at 5:57AM UTC
File size:70.80 MB
Downloads:16
Version:6.4.6(322) for Android 8.0+ (Oreo, API 26)
Uploaded:October 16, 2025 at 12:09AM UTC
File size:70.61 MB
Downloads:33
Version:6.4.5(320) for Android 8.0+ (Oreo, API 26)
Uploaded:September 13, 2025 at 8:07PM UTC
File size:70.64 MB
Downloads:20
Version:6.4.4(318) for Android 8.0+ (Oreo, API 26)
Uploaded:September 4, 2025 at 8:27AM UTC
File size:70.60 MB
Downloads:9
Version:6.4.1(308) for Android 8.0+ (Oreo, API 26)
Uploaded:August 7, 2025 at 7:53AM UTC
File size:65.33 MB
Downloads:9
Version:6.4(304) for Android 8.0+ (Oreo, API 26)
Uploaded:July 21, 2025 at 7:42PM UTC
File size:64.81 MB
Downloads:20
Version:6.5.3
Uploaded:May 29, 2026 at 10:17AM UTC
File size:90.91 MB
Downloads:16
Version:6.5.2
Uploaded:May 16, 2026 at 8:44AM UTC
File size:90.72 MB
Downloads:24
Version:6.5.1
Uploaded:May 8, 2026 at 12:21AM UTC
File size:90.65 MB
Downloads:20
Version:6.4.11
Uploaded:April 3, 2026 at 4:03PM UTC
File size:80.83 MB
Downloads:34
Version:6.4.10
Uploaded:March 9, 2026 at 5:57AM UTC
File size:80.83 MB
Downloads:26
Version:6.4.6
Uploaded:October 16, 2025 at 12:09AM UTC
File size:80.61 MB
Downloads:69
Version:6.4.5
Uploaded:September 13, 2025 at 8:07PM UTC
File size:80.61 MB
Downloads:43
Version:6.4.4
Uploaded:September 4, 2025 at 8:27AM UTC
File size:80.63 MB
Downloads:15
Version:6.4.3.1
Uploaded:August 18, 2025 at 7:46PM UTC
File size:75.64 MB
Downloads:19
Version:6.4.2
Uploaded:August 7, 2025 at 9:58AM UTC
File size:75.38 MB
Downloads:13
