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Download SimpleX Chat 6.4.1 APK
Target: Android 14 (API 34)
120, 160, 213, 240, 320, 480, 640dpi
What's new in SimpleX Chat 6.4.1
New in v6.4.1:
- welcome your contacts: set profile bio and welcome message.
- enable disappearing messages by default for new contacts.
- short SimpleX addresses and group links now include profile images and welcome messages.
Also, we added 4 new interface languages: Catalan, Indonesian, Romanian and Vietnamese. Huge thanks to our users who contributed the translations!
Read more: simplex.chat/blog/20250729-simplex-chat-v6-4-1-welcome-contacts-protect-groups-app-security.html
About SimpleX Chat 6.4.1
SimpleX - the first messaging platform that has no user identifiers of any kind - 100% private by design!
Premium
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 6.4.1 variants
This release may come in several variants. Consult our handy FAQ to see which download is right for you.
Version:6.4.1
Uploaded:August 7, 2025 at 7:53AM UTC
File size:75.28 MB
Downloads:16
Version:6.5.4
Uploaded:June 6, 2026 at 2:33PM UTC
File size:91.03 MB
Version:6.5.4(353) for Android 8.0+ (Oreo, API 26)
Uploaded:June 3, 2026 at 8:24PM UTC
File size:124.30 MB
Downloads:7
Version:6.5.1(347) for Android 8.0+ (Oreo, API 26)
Uploaded:May 2, 2026 at 9:47PM UTC
File size:123.82 MB
Downloads:111
Version:6.5(345) for Android 8.0+ (Oreo, API 26)
Uploaded:April 30, 2026 at 8:19PM UTC
File size:123.92 MB
Downloads:165
Version:6.4.11(336) for Android 8.0+ (Oreo, API 26)
Uploaded:April 4, 2026 at 7:00PM UTC
File size:105.32 MB
Downloads:41
Version:6.4.10(333) for Android 8.0+ (Oreo, API 26)
Uploaded:January 31, 2026 at 9:18AM UTC
File size:105.32 MB
Downloads:78
Version:6.4.8(328) for Android 8.0+ (Oreo, API 26)
Uploaded:December 16, 2025 at 9:19PM UTC
File size:105.35 MB
Downloads:74
Version:6.4.7(325) for Android 8.0+ (Oreo, API 26)
Uploaded:November 9, 2025 at 9:34AM UTC
File size:105.34 MB
Downloads:73
Version:6.4.6(321) for Android 8.0+ (Oreo, API 26)
Uploaded:October 9, 2025 at 6:27PM UTC
File size:105.11 MB
Downloads:36
Version:6.4.5(319) for Android 8.0+ (Oreo, API 26)
Uploaded:September 12, 2025 at 12:15PM UTC
File size:105.14 MB
Downloads:32
Version:6.4.4(317) for Android 8.0+ (Oreo, API 26)
Uploaded:September 2, 2025 at 8:29AM UTC
File size:105.13 MB
Downloads:22
Version:6.5.4
Uploaded:June 3, 2026 at 8:24PM UTC
File size:88.14 MB
Downloads:7
Version:6.5.2
Uploaded:May 19, 2026 at 10:57PM UTC
File size:88.10 MB
Downloads:24
Version:6.5.1
Uploaded:May 2, 2026 at 9:47PM UTC
File size:88.02 MB
Downloads:111
Version:6.5
Uploaded:April 30, 2026 at 8:19PM UTC
File size:88.02 MB
Downloads:165
Version:6.4.11
Uploaded:April 4, 2026 at 7:00PM UTC
File size:83.00 MB
Downloads:41
Version:6.4.10
Uploaded:January 31, 2026 at 9:18AM UTC
File size:83.00 MB
Downloads:78
Version:6.4.8
Uploaded:December 16, 2025 at 9:19PM UTC
File size:83.00 MB
Downloads:74
Version:6.4.7
Uploaded:November 9, 2025 at 9:34AM UTC
File size:83.00 MB
Downloads:73
Version:6.4.6
Uploaded:October 9, 2025 at 6:27PM UTC
File size:82.56 MB
Downloads:36
Version:6.4.5
Uploaded:September 12, 2025 at 12:15PM UTC
File size:82.56 MB
Downloads:32
