About
Loupe shows you the device data that third-party apps can access to fingerprint and track you across the internet. The app reads the same public iOS APIs that advertisers and trackers use, displaying raw readings organized by permission level: passive data (time zone, keyboard languages, battery, storage) that any app can access without prompting; permission-gated data (location, contacts, photos, motion); and advanced side channels like installed app detection and graphics checks. Everything stays on your device—Loupe uploads nothing and keeps no accounts or analytics. Built by security researchers, it lets you see exactly what tracking surface your iPhone exposes.
Highlights
- View passive data any app can read without permission: time zone, keyboard languages, battery, storage
- See permission-gated readings like location, contacts, photos, and motion sensors
- Detect advanced side channels including installed apps and graphics capabilities
- All data stays on device—nothing uploaded, synced, or shared without your export
Best for
iOS users concerned about device fingerprinting and tracking who want to audit what data third-party apps can access without permission. Security researchers and privacy-conscious individuals investigating their iPhone's tracking surface.
At a glance
Loupe: What Apps Can See is available on iOS — all free to download.
It is developed by Mysk Inc..
Frequently Asked Questions
- Is Loupe: What Apps Can See free?
- Yes — Loupe: What Apps Can See is free to download on iOS.
- What platforms is Loupe: What Apps Can See available on?
- Loupe: What Apps Can See is available on iOS.
- What is Loupe?
- Loupe is an iOS app that shows you the device data third-party apps can access to fingerprint and track you. It reads the same public APIs that advertisers use, displaying raw readings organized by permission level and explaining why each data point matters for tracking.
- What data can Loupe show me?
- Loupe displays passive data (time zone, keyboard languages, battery, storage), permission-gated readings (location, contacts, photos, motion), and advanced side channels like which apps you have installed, graphics capabilities, and device setup timestamps.
- Does Loupe upload my data?
- No. Loupe reads everything on your device and keeps it there. Nothing is uploaded, synced, or shared unless you manually export it yourself. There are no accounts and no analytics.
- What are the alternatives to Loupe: What Apps Can See?
- Loupe: What Apps Can See is similar to Mullvad VPN, Surfshark VPN: Fast VPN App, AppCleaner, and Stratum - Authenticator App. Browse related apps by tag: security, privacy, and data analysis.
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