Sentinel Lens vs Tella
Side-by-side comparison of two open source alternatives
Sentinel Lens
Sentinel Lens is a facial recognition surveillance app that uses your Android device's camera to record video in the background (with no live preview) and sends Telegram alerts when unauthorized individuals are detected, based on a configurable blacklist and whitelist. Key Features Background Recording Discreet Capture: Record video silently in the background without any visible camera preview. Saved Camera Footage: Automatically store recordings for later review. Front or Back Camera: Choose either camera lens for optimal coverage. Advanced Facial Recognition Facial Recognition Surveillance: Analyze recorded frames to identify known and unknown faces. Configurable Watchlist: Maintain custom blacklist and whitelist entries to control alerts. Real-Time Alerts Telegram Alert Integration: Send instant notifications via Telegram when a watchlist match is detected.
Tella
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.
| Feature | Sentinel Lens | Tella |
|---|---|---|
| License | GPL-3.0-only | Apache-2.0 |
| Install sources | F-DroidGitHub | F-DroidGitHub |
| Categories | Password ManagerMedia PlayerVideo | Password ManagerNotesMedia PlayerVideo |
| Features | Ad-FreeOpen SourceNo Tracking | Ad-FreeOpen SourceNo Tracking |
| Platforms | Android | Android |
| Website | ||
| Source code |