Scan your own phone.
Lethe reads every installed app's code, on your device, and shows you the tracker SDKs compiled inside — advertising, analytics, and profiling most apps never mention. The analysis runs on your phone. Your list of apps is never stored on our servers, and never sold.
Download Lethe for AndroidAndroid 8.0+ · installs outside the Play Store · free
How to install
- 1
Download the file
Tap the button above. Your browser saves lethe.apk.
- 2
Allow the install
Android asks whether to allow installing apps from your browser — tap Allow. You only do this once. This step exists because Lethe is distributed directly, not through the Play Store.
- 3
Open it and scan
Open the file to install, launch Lethe, and tap Scan this device. The first scan reads every app and takes a few minutes — leave it open while it works.
What leaves your phone
The code analysis happens entirely on-device. Only the names of matched trackers and declared permissions are sent to be scored — never your list of installed apps, never the app files themselves. Nothing is stored after scoring.
You may see a “Play Protect wasn't able to verify” notice on install — that appears for any app installed outside the Play Store. Tap Install anyway to continue.
Curious what it looks at first? Browse the public catalog — the same declared-vs-embedded analysis, on the web.