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About
Loupe shows you the device data that third-party apps and trackers can see about you without your knowledge. The app reads the same public iOS APIs that advertisers use for fingerprinting—revealing your region, languages, settings, storage, battery status, installed apps, and sensor data—and explains why each detail matters for tracking. Loupe stores everything locally on your iPhone with no uploads, accounts, or analytics. Built by security researchers Mysk, it sorts readable data into three access levels: passive (no permission needed), permission-gated (location, contacts, photos), and advanced side channels (app detection, graphics checks).
Highlights
- View passive data readable by any app without permission: time zone, keyboard languages, battery, storage
- See permission-gated readings like location, contacts, photos, and motion sensor access
- Detect installed apps and graphics capabilities through public API side channels
- All data stays on your device—nothing uploaded, synced, or shared without your export
Best for
Privacy-conscious iPhone users who want to understand what personal data and device details third-party apps and advertisers can access for fingerprinting and tracking purposes.
At a glance
Loupe: What Apps Can See is available on iOS — all free to download.
It is developed by Mysk Inc..
Screenshots
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 a privacy tool that shows you the device data third-party apps can see about you. It reads the same public iOS APIs that advertisers use for fingerprinting, displaying your region, languages, settings, storage, battery, installed apps, and sensor details, then explains why each matters for tracking.
- 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 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 popular apps you have installed, graphics capabilities, and the exact date your device was set up or last erased.
- What are the alternatives to Loupe: What Apps Can See?
- Loupe: What Apps Can See is similar to Mullvad VPN, Surfshark VPN: Fast & Secure, AppCleaner, and Stratum - Authenticator App. Browse related apps by tag: security, privacy, and data analysis.
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