Loupe

Loupe is a tool that reveals how your device details are used for online tracking through a process called fingerprinting. It uses the same publicly available iOS APIs as third-party apps to display this data. The software shows that trackers don't need personal information like your name, email, or location to identify you. Instead, details like your region, languages, settings, storage, and sensors are enough to track your online activities. Loupe collects this data into one place for a clear view of the information you're sharing.

Loupe categorizes each data point based on the access level needed to get it, including passive data like your time zone and keyboard languages, data that requires permission like location, contacts, photos, and motion, and advanced data accessible through public APIs like your installed apps. All data read by Loupe stays on your device and isn't uploaded or shared unless you choose to export it.

Developed by the security research team Mysk, Loupe aims to reveal the tracking surface of your iPhone to help you make informed decisions about your digital footprint.