Loupe: What Apps Can See

Loupe: What Apps Can See

Privacy & Security Guide

289 ratings
58 reviews
#44 in free Developer Tools
🔧 Utilities
🛠️ Developer Tools
Free

Details

  • Released
  • Updated
  • June 5, 2026
  • June 12, 2026
Loupe: What Apps Can See screenshot #1 for iPhone
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About

This app reveals the device details advertisers use for fingerprinting, showing you what information your iPhone shares. Explore passive, permission-based, and advanced data points to understand your digital footprint. All data stays on your device, with no uploads or analytics.

See device fingerprinting data
Understand data access levels
View passive data
Check permission-based data
Explore advanced data
Data stays on device
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What's New in Loupe

1.0.1

June 12, 2026

- Photos now asks for your permission before it looks up place names for your photo locations. - New language support: Korean, Polish, Italian, and Vietnamese. - Fixed the Steam URL scheme, thanks to @Solarphlare. - Small interface refinements. - Small localization refinements.

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Charts

Top Free

📈 44+2

Developer Tools

This app rose +2 positions in Developer Tools chart.

Last updated on July 23, 2026.

User reviews

Good !

👍👍👍

Informative. Brilliantly Simplistic

Yeah “fingerprinting” is a form of identifying and tracking you digitally, exploiting your information and you online. But how exactly? By what means? And how do you measure that?

No better way to explain than demonstrate than by picking up your very own, go to, most used “computer” — your iPhone. Let Loupe do the walking. You can’t help but watch and learn. It’s personal. It’s your device.

Excellent demonstration for a reliable lesson in digital tracking but WITHOUT the online exploitation.
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Wichtige App!

Es ist sehr wichtig, dass die Leute sehen, was die Apps alles für Daten sammeln können!

好有趣的 app

感谢科普知识

这个app不好评就没天理了

从3gs到16,从来没有给任何app评价过,这是这一次认真的给一个app评价,而且是必须好评!因为他能让你的看到那些app偷窥隐私是多么的无底线!

Developer apps

FAQ

What is Loupe?

Loupe is a privacy and security guide that shows you the device details advertisers use for fingerprinting. It helps you understand what information your iPhone is sharing online without your explicit consent.

How does Loupe work?

Loupe reads public iOS APIs to display raw data about your device's region, languages, settings, storage, and sensors. It explains why these details matter for online tracking.

Does Loupe collect my data?

No, Loupe is designed with privacy as a core feature. All data is read on your device and kept there; nothing is uploaded, synced, or shared unless you choose to export it yourself.

What kind of data can I see with Loupe?

You can explore passive data like time zone and keyboard languages, data requiring permission such as location and photos, and advanced data like installed apps and graphics checks.

Is Loupe free to use?

Yes, Loupe is completely free to download and use. There are no in-app purchases or subscription fees required to access its features.

What devices does Loupe support?

Loupe is available for iPhone and iPad. It is designed to run on iOS devices.

How often is Loupe updated?

The latest version of Loupe is 1.0.1, and it was last updated on June 12, 2026. Updates typically address bug fixes and may introduce new features or data insights.

Does Loupe have ads?

No, Loupe does not contain any advertisements. It is a completely ad-free application, ensuring an uninterrupted user experience.