Tella

Encrypt and hide files on your device

New in version 2.20.2

Android: Tella FOSS 2.20.2
- Performance, security, and stability improvements
- Bug fixes and UI polish

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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wearehorizontal.org/donate.html

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

Version 2.20.2 (232) suggested Added on Apr 22, 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.
- 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
- 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.
- 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 29 MiB PGP Signature | Build Log

New in version 2.11.0

Android: Tella FOSS 2.11.0
- Replaced Google Maps with OpenStreetMaps
- Added Android CameraX support
- Added support for privacy-preserving analytics. All analytics are disabled by default and opt-in.
- PDFs can now be opened and viewed directly inside Tella
- Edit media: users can crop and rotate images within Tella's encrypted container
- Feedback(https://tella-app.org/features/#feedback) : users can now share feedback, bug reports, or improvement suggestions with the Tella team directly from

Version 2.11.0 (186) - Added on Mar 01, 2025

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
- android.permission.ACCESS_ALL_DOWNLOADS
- 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.
- android.permission.ACCESS_DOWNLOAD_MANAGER
- 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.
- 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.
- 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.
- 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_DOCUMENTS
- android.permission.MANAGE_EXTERNAL_STORAGE
- 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
- 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 25 MiB PGP Signature | Build Log
Version 2.0.15 (149) - Added on Jul 09, 2023

arm64-v8a armeabi 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
- android.permission.ACCESS_ALL_DOWNLOADS
- 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.
- android.permission.ACCESS_DOWNLOAD_MANAGER
- 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.
- 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.
- 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.
- 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_DOCUMENTS
- android.permission.MANAGE_EXTERNAL_STORAGE
- 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
- 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.
Download APK 18 MiB PGP Signature | Build Log

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