AirGuard - AirTag protection

Technische Universität Darmstadt

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

Reviewing here, because FDroid doesn't have that ability. A feature that I think would be very beneficial is being able to click on the locations on the map and get a timestamp for when that device was seen there. Or even a list of the beacons by date that I can click and jump me to that location. Also the "what to do after" instructions are worded weird. Perhaps reword to "Get to a safe place AFTER the device is deactivated, so you aren't tracked going there."

So far it's detected a airtag on my vehicle, which I am taking to someone to search for. I wish it wouldn't pick up apple tablets, phones and such. But I would really like if we could get more explaination on what the tracker means, how long it's been tracking like to which locations, and gave me better details on the map. Also when I was hitting the button to make the airtag make a sound it wasn't working. Please keep working on this app to improve, we need this safe technology.

It failed to detect an AirTag-- I was near it for about 10 minutes before being told it was there, so timing may have been an issue. I had the app make the tag beep and it beeped. The scan and notifications settings were correct and we were both on the same wifi. I have not delved into how long it may take for tags & the app to communicate but I can see it taking a few minutes, 10 or so being a possibility. I will update when I find out more.

What's new

From this release on we also support the new Google Find My Device Trackers.