SimpleX - the first messaging platform that has no user identifiers, not even random numbers!
Security assessment was done by Trail of Bits in November 2022.
SimpleX Chat features:
- end-to-end encrypted messages, with editing, replies and deletion of messages.
- sending end-to-end encrypted images and files.
- 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.
- private instant notifications.
- portable chat profile - you can transfer your chat contacts and history to another device (terminal or mobile).
SimpleX Chat advantages:
- Full 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 network: you can use SimpleX with your own servers and still communicate with people using the servers that are pre-configured in the apps or any other SimpleX servers.
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 - our servers do not have access to this information.
All messages are end-to-end encrypted using open-source double-ratchet protocol; the messages are routed via our servers using open-source SimpleX Messaging Protocol.
Please send us any questions via the app (connect to the team via settings!),
email us or submit an
issue on GitHub.
Follow us on Mastodon (
@simplex@mastodon.social), Twitter (
@SimpleXChat) and Reddit (
r/SimpleXChat) for the latest updates.
Once you install SimpleX Chat, join the group of users via
this link to share your ideas and feedback.
Versions
Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.
Download F-Droid
-
arm64-v8a
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
android.permission.VIDEO_CAPTURE
-
record audio
This app can record audio using the microphone while the app is in use.
-
change your audio settings
Allows the app to modify global audio settings such as volume and which speaker is used for output.
-
run foreground service
Allows the app to make use of foreground services.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
control vibration
Allows the app to control the vibrator.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
display notifications as full screen activities on a locked device
Allows the app to display notifications as full screen activities on a locked device
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
Download APK
54 MiB
PGP Signature
|
Build Log
-
arm64-v8a
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
android.permission.VIDEO_CAPTURE
-
record audio
This app can record audio using the microphone while the app is in use.
-
change your audio settings
Allows the app to modify global audio settings such as volume and which speaker is used for output.
-
run foreground service
Allows the app to make use of foreground services.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
control vibration
Allows the app to control the vibrator.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
display notifications as full screen activities on a locked device
Allows the app to display notifications as full screen activities on a locked device
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
Download APK
54 MiB
PGP Signature
|
Build Log
-
arm64-v8a
This version requires Android 10 or newer.
It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.
Permissions
-
take pictures and videos
This app can take pictures and record videos using the camera while the app is in use.
-
android.permission.VIDEO_CAPTURE
-
record audio
This app can record audio using the microphone while the app is in use.
-
change your audio settings
Allows the app to modify global audio settings such as volume and which speaker is used for output.
-
run foreground service
Allows the app to make use of foreground services.
-
prevent phone from sleeping
Allows the app to prevent the phone from going to sleep.
-
run at startup
Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
-
control vibration
Allows the app to control the vibrator.
-
have full network access
Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
-
view Wi-Fi connections
Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
-
view network connections
Allows the app to view information about network connections such as which networks exist and are connected.
-
modify or delete the contents of your shared storage
Allows the app to write the contents of your shared storage.
-
ask to ignore battery optimizations
Allows an app to ask for permission to ignore battery optimizations for that app.
-
display notifications as full screen activities on a locked device
Allows the app to display notifications as full screen activities on a locked device
-
use biometric hardware
Allows the app to use biometric hardware for authentication
-
use fingerprint hardware
Allows the app to use fingerprint hardware for authentication
-
read the contents of your shared storage
Allows the app to read the contents of your shared storage.
Download APK
54 MiB
PGP Signature
|
Build Log
