Tella APK

Tella

Overview

• Tella is a specialized documentation app designed for activists, journalists, and human rights defenders operating in hostile, monitored, or offline environments.

• It empowers users to safely collect evidence of violence, corruption, electoral fraud, and human rights abuses while minimizing personal safety risks.

Core Security Features

1. Advanced Encryption:

• All media, files, and metadata stored inside Tella are encrypted at rest.

• Content remains entirely inaccessible without the proper unlock code, protecting sensitive evidence even if the physical device is seized.

2. App Camouflage:

• Users can disguise the application by altering its icon and name to resemble innocuous tools, such as a basic calculator or standard camera, reducing suspicion during physical inspections.

3. Quick Delete:

• In high-risk scenarios, a rapid-purge mechanism allows users to permanently erase all sensitive files and user data stored within the app in a matter of seconds.

Media and File Management

1. Secure In-App Capture:

• Photos, videos, and audio recordings can be taken directly inside Tella's encrypted container.

• This prevents sensitive media from appearing in the device's public photo gallery or cloud backups.

2. Centralized Organization:

• External documents and evidence can be imported directly into the application, allowing users to categorize, tag, and organize critical files into secure folders.

Field Data Collection

1. Customized Forms:

• Organizations can build and deploy structured surveys to field researchers to standardize evidence gathering during investigations.

2. Direct Server Sync:

• Collected data can be safely stored offline and automatically transmitted directly to a secure organizational server as soon as an internet connection becomes available.

FAQ

Q: How does Tella protect my files from unauthorized access on my phone?

A: Tella uses advanced encryption at rest to secure all media, files, and metadata stored inside the application. Everything remains completely scrambled and inaccessible without your unique unlock code, meaning your sensitive documentation stays safe even if your physical device is seized or inspected.

Q: Can I hide the Tella app on my phone screen so it doesn't look suspicious?

A: Yes, Tella includes an App Camouflage feature that allows you to change the app's icon and display name. You can mask Tella to look like an everyday, harmless tool such as a basic calculator or a standard camera app, helping you avoid unwanted attention during physical phone searches.

Q: What should I do if I am in immediate danger and need to erase my data quickly?

A: Tella is equipped with a Quick Delete feature designed specifically for emergency scenarios. This rapid-purge mechanism lets you permanently destroy all sensitive files and personal data stored inside the app in just a few seconds, preventing compromising evidence from falling into dangerous hands.

Version History

v3.2.0——17 Aug 2026

Protect and hide sensitive files Download the latest version of Tella to enjoy new features and updates immediately!

*3.2.0

- Implemented mTLS and enforced certificate pinning for both the sender and receiver in Nearby Sharing. This is a mitigation for man-in-the-middle attacks detected in our most recent security audit: https://tella-app.org/security-and-privacy

- Bug fixes and minor improvements:

- Simplified the Nearby Sharing manual connection flow: pre-filled the port field and added automatic dot insertion after each octet while typing the IP address.

Full notes: https://tella-app.org/releases

*3.1.0

- Replaced camera library and location provider with FOSS options.

- Bug fixes and minor improvements:

- Fixed import and delete original bug that prevented original file being erased.

- Added option to hide Tella Web connection URL from connection's setting.

- Fixed screen security issue on on boarding (some screens were not hidden).

- Properly remove camouflage when changing lock type.

- Fixed geo-location permission flow.

Full notes: https://tella-app.org/releases

*3.0.0

- New feature: Nearby Sharing. User can securely share files with other Tella's in physical proximity. Nearby Sharing is fully offline, available across platforms and devices, and assures end-to-end encryption.

- Implemented security fixes detected by our most recent security audit (to be published soon!).

- New languages support: Ukrainian.

- Bug fixes and minor improvements.

Full release notes: https://tella-app.org/releases