AirGuard - AirTag protection

Secure Mobile Networking

About this app

With AirGuard you get the anti-tracking protection you deserve!
The app periodically scans your surroundings for potential tracking devices, like AirTags or other Find My devices.

The AirTags and other Find My devices are simple, small and perfect to track Android users!
Without tracking warnings, as integrated on iOS, anyone could try to track your behavior by placing an AirTag in your jacket, backpack or car.

With the app you can play a sound on AirTags and find it easily. Afterward, you can view at which locations the device has tracked you. For this we use background location access. All location data never leaves your device

If no one is trying to track you, the app will never bother you.

How does it work?

AirGuard uses Bluetooth scans of your Android phone to find AirTags and Find My trackers. Every tracker that is found will be saved locally on your device.
Whenever a tracker gets detected multiple times the app will recognize this. It compares the locations where the tracker has been detected.
If a tracker is detected at least 3 times and the locations have changed (to make sure its not your neighbour) the app sends you a notification.
If this tracker is an AirTag you can play a sound to find it.

All this happens locally on your device and the private information, like location, tracker ids, etc will never leave your device.

Who are we?

We are part of the Technical University of Darmstadt in Germany. This project is part of a scientific research from the Secure Mobile Networking Lab. Our goal is to protect privacy and to find out how many people are opposed to tracking.
In this app you can voluntarily participate in a research study that will share anonymized data with us.

This app will never get monetized by showing ads, in-app purchases or anything else.

Our privacy policy can be found here:
https://tpe.seemoo.tu-darmstadt.de/privacy-policy.html

This app is open-source:
https://github.com/seemoo-lab/AirGuard

Disclaimer
AirTag, FindMy and iOS are trademarks of Apple Inc.
We are not working together with Apple Inc.

Ratings and reviews

The most recent iteration (10/08/2023) of this app is easy to install and intuitive to operate. At the bottom of the screen are four icons. Left to right: Dashboard, Scan, Devices, Settings. The Scan page takes about a minute to run a scan. Be patient. However, running a scan manually does not change the time shown on the Dashboard for the Last scan, which is strange. Otherwise, a wonderful app, much needed during these days. Thank you for developing it and for offering it without charge.

I have 2 different notifications, with a red alert and an orange alert, it shows a few of the places I've been in the last few days but not all of them. When I tap "play a sound" the whole box lights up. When I do a manual scan, it shows a tile and an apple device, but continues scanning for over 10 minutes and I can't select either of the 2 devices that it's showing. Again, when I tap "play a sound" the WHOLE box for "find and deactivate an airtag" lights up. Useless app. On Moto Pure.

I like the concept! I installed the app and dug through the source code. The biggest weakness of this app is the location data quality is poor. It looks like location comes from the GPS or network, whatever is fastest, but not whichever is most accurate. Bluetooth tracking is in the range of tens of meters which needs high accuracy to work, so the idea doesn't work, unless you get lucky and get good location data.

What's new

• Improved Detection: Fewer false notifications, especially in airplanes.
• Reliable Scans: More stable background scans on all Android versions.
• Tracker Observation: Observe a tracker for one hour and get notified.
• New Scan Screen: Easier to find malicious trackers.
• Simplified Wording: More user-friendly texts.
• Educational Articles: New guides and response tips for tracker detection.