Kontalk

Community-driven messaging
'''Follow @kontalknet on Twitter or identi.ca to keep up to date with the latest
changes and on service status!'''

Kontalk is a secure instant messenger, allowing you to send and receive text,
image and voice messages (other file types coming soon) to and from other
Kontalk users completely free of charge (*).

* '''Your phone number is your ID.''' No usernames or passwords
* '''It automatically finds other Kontalk users''' by looking at your address book, making it even easier to start chatting on Kontalk with your friends
* '''End-to-end encryption''' ensures safe and private conversations, so that only you and the person you are talking to can read them
* Your and all phone numbers used on the network are irreversibly encrypted
* It supports multiple devices, making it very easy to start chatting on your phone and continue the conversation on your tablet
* Based on open standards: XMPP and OpenPGP

The network relies on community donations to keep the infrastructure running, so
if you can, please donate on [http://kontalk.net/ kontalk.net]. Even small
donations matter.

You can find all permissions used by the app explained at
[https://github.com/kontalk/androidclient/wiki/Android-client-permissions this
page].

This version has been stripped of all Google components, meaning no support for
push notifications.

(*) Carrier fees for Internet traffic may apply

Packages

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
  • Version 4.1.0-beta4 (250) - Added on 2017-10-18

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.ACCESS_COARSE_LOCATION
    • android.permission.ACCESS_FINE_LOCATION
    • android.permission.ACCESS_WIFI_STATE
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.1.0-beta3 (248) - Added on 2017-10-01

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.ACCESS_COARSE_LOCATION
    • android.permission.ACCESS_FINE_LOCATION
    • android.permission.ACCESS_WIFI_STATE
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.1.0-beta2 (246) - Added on 2017-10-01

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.ACCESS_COARSE_LOCATION
    • android.permission.ACCESS_FINE_LOCATION
    • android.permission.ACCESS_WIFI_STATE
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.1.0-beta1 (244) - Added on 2017-09-13

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.ACCESS_COARSE_LOCATION
    • android.permission.ACCESS_FINE_LOCATION
    • android.permission.ACCESS_WIFI_STATE
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.4 (240) - Added on 2017-07-14

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.ACCESS_WIFI_STATE
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.3 (226) - Added on 2017-04-27

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.0 (220) - Added on 2017-02-14

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.0-beta6.1 (219) - Added on 2017-01-24

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.0-beta6 (218) - Added on 2017-01-24

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.READ_EXTERNAL_STORAGE
  • Version 4.0.0-beta5 (217) - Added on 2017-01-02

    This version requires Android 2.3 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Download APK 10 MiB PGP Signature

    Permissions

    • android.permission.INTERNET
    • android.permission.ACCESS_NETWORK_STATE
    • android.permission.VIBRATE
    • android.permission.AUTHENTICATE_ACCOUNTS
    • android.permission.USE_CREDENTIALS
    • android.permission.GET_ACCOUNTS
    • android.permission.MANAGE_ACCOUNTS
    • android.permission.READ_SYNC_STATS
    • android.permission.READ_SYNC_SETTINGS
    • android.permission.WRITE_SYNC_SETTINGS
    • android.permission.READ_CONTACTS
    • android.permission.WRITE_CONTACTS
    • android.permission.WRITE_PROFILE
    • android.permission.READ_PROFILE
    • android.permission.RECEIVE_BOOT_COMPLETED
    • android.permission.CALL_PHONE
    • android.permission.WRITE_EXTERNAL_STORAGE
    • android.permission.WAKE_LOCK
    • android.permission.READ_PHONE_STATE
    • android.permission.RECORD_AUDIO
    • org.kontalk.permission.NOTIFICATION_ACTION
    • android.permission.READ_EXTERNAL_STORAGE