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Tella

Encrypt and hide files on your device
New in version 3.4.1
Hotfix: Restored lost files for users who first installed Tella on or before 2024.
In challenging environments with limited or no internet connectivity or in the face of repression Tella makes it easier and safer to document events, whether that’s violence, human rights violations, corruption, or electoral fraud.
ENCRYPTION: All of the content and data stored in Tella are encrypted. This means that unless the app is unlocked, all the data within Tella will remain inaccessible.
FILE MANAGEMENT: Take photos, videos, or audio recordings directly in Tella, or import documents from your phone, and easily organize your files in folders.
CAMOUFLAGE: Change the app icon and name to a seemingly harmless one, such as a calculator or a camera.
QUICK DELETE: In just a few seconds, delete all the sensitive data and files stored in Tella.
DATA-COLLECTION: Groups and organizations can collect data through forms and surveys, and received the data directly on their server.
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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.

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  • Version 3.4.1 (260) suggested Added on Oct 25, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • 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.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • connect and disconnect from Wi-Fi
      Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
    • 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.
    • android.permission.MANAGE_ACCOUNTS
    • interact with nearby Wi-Fi devices
      Allows the app to advertise, connect, and determine the relative position of nearby Wi-Fi devices
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • request delete packages
      Allows an application to request deletion of packages.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • android.permission.USE_CREDENTIALS
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • org.hzontal.tellaFOSS.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 33 MiB PGP Signature | Build Log

    • New in version 3.4.0
    Improved Verification Mode:
    • Organized information into 5 categories, each with its own help screen.
    • Verification information can now be saved as a CSV in Tella and attached to reports and connections.
    • Faster location, even indoors, and GPS is now requested before recording audio and video too.
    • Metadata is saved without waiting for Wi-Fi when offline.
    Bug fixes and minor improvements.
    Updated translations. Please consider helping us localize Tella.

    Full release notes: https://tella.app/r
  • Version 3.4.0 (258) - Added on Oct 12, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • 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.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • connect and disconnect from Wi-Fi
      Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
    • 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.
    • android.permission.MANAGE_ACCOUNTS
    • interact with nearby Wi-Fi devices
      Allows the app to advertise, connect, and determine the relative position of nearby Wi-Fi devices
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • request delete packages
      Allows an application to request deletion of packages.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • android.permission.USE_CREDENTIALS
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • org.hzontal.tellaFOSS.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 33 MiB PGP Signature | Build Log

    • New in version 3.3.2
    • Translations are now managed on Weblate, please help localize Tella.
    • Updated onboarding and advanced settings, including camouflage.
    • Uwazi: tab counts, swipe between tabs, clearer copy, accessibility tweaks, shared UI, server URL validation, warning when deleting media pending submission, confirmation snackbars.
    • Fixed a Google Drive crash and wrong “problem creating folder” error after the first report.
    • Full notes: https://tella-app.org/releases
  • Version 3.3.2 (254) - Added on Aug 28, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • access Do Not Disturb
      Allows the app to read and write Do Not Disturb configuration.
    • 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.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • connect and disconnect from Wi-Fi
      Allows the app to connect to and disconnect from Wi-Fi access points and to make changes to device configuration for Wi-Fi networks.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
    • 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.
    • android.permission.MANAGE_ACCOUNTS
    • interact with nearby Wi-Fi devices
      Allows the app to advertise, connect, and determine the relative position of nearby Wi-Fi devices
    • control Near Field Communication
      Allows the app to communicate with Near Field Communication (NFC) tags, cards, and readers.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • 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.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • request delete packages
      Allows an application to request deletion of packages.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • android.permission.USE_CREDENTIALS
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • org.hzontal.tellaFOSS.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 33 MiB PGP Signature | Build Log

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