Ever wondered how advertisers recognize you across apps and websites? It usually comes down to fingerprinting: small, ordinary details about your device, combined until the mix is rare enough to point back to you. Loupe lets you see those details yourself. It reads the same public iOS APIs that third-party apps use, showing you the raw data and explaining why it matters. WHAT YOU CAN EXPLORE Trackers don't need your name, email, or location to recognize you. Your region, languages, settings, storage, and sensors create a pattern distinctive enough to follow you online. Loupe puts these readings in one place so you can see exactly what you're sharing. THREE LEVELS OF ACCESS Loupe sorts every reading by how much access it takes: - Passive: readable by any app with no prompt at all, from your time zone and keyboard languages to your battery and storage. - Needs permission: readings tha…
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The store listing above is Loupe: What Apps Can See's answer to those questions — public, real, and live in the store.
Notice the icon in particular — it's the one thing users see in every context: search results, the home screen, push notifications. Loupe: What Apps Can See's icon is a tiny canvas that has to work at 60×60 and 1024×1024 alike. Tap "View on App Store" above for the full screenshot set Apple didn't surface through their API.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
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