IronScope - Metal Detector
Magnetic Field · EMF Detector
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
IronScope turns your iPhone into a real magnetic field detector. Using the built-in magnetometer, it measures the surrounding magnetic field strength in microteslas (µT) and alerts you to nearby ferromagnetic objects.
KEY FEATURES
• Real-time magnetic field reading in µT
• Color-coded gauge with audio alarm intensity
• One-tap calibration to local Earth field baseline
• Visual pulse alarm when metal detected
• Toggle audio beeps on/off
• Fully offline — no network, no tracking, no ads
USE CASES
• Find metal studs behind walls
• Locate buried nails, screws, or pipes
• Test if jewelry is magnetic
• Detect EMF from electronics
• Demonstrate magnetism for science class
HOW IT WORKS
The magnetometer in your iPhone constantly reads the ambient magnetic field. IronScope subtracts the calibrated baseline (Earth's natural ~50 µT) and shows the excess as a metal-presence signal. Stronger ferromagnetic objects produce larger readings.
LIMITATIONS
Smartphone magnetometers have lower sensitivity than professional metal detectors. IronScope works best on small ferromagnetic objects (iron, steel, nickel) within a few centimeters. Aluminum, copper, and other non-magnetic metals will not be detected. Not suitable for treasure hunting at depth.
PRIVACY
The magnetometer is read locally. No audio, video, or location is collected. No analytics, no ads, no account.
SUBSCRIPTION INFO
• Payment will be charged to your Apple ID account at confirmation of purchase.
• Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period.
• Your account will be charged for renewal within 24 hours prior to the end of the current period.
• You can manage and cancel your subscriptions by going to App Store → Account → Subscriptions.
Privacy Policy: https://frexx.top/ironscope/privacy.html
Terms of Use: https://frexx.top/ironscope/terms.html
SUPPORT
475740640@qq.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
This update completes the English in-app experience and adds a clear fallback when a device or simulator does not provide magnetometer data. IronScope now explains that readings are phone magnetometer estimates and should not be used for security screening, mining, or safety decisions. The history, calibration, export, subscription flow, and StoreKit messages have also been refreshed. Existing subscriptions are preserved.
The developer, 杰 向, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 杰 向
- Size
- 543.7 KB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- IronScope Pro Weekly $1.59
- IronScope Pro Yearly $19.90
- Copyright
- © 2026 Clawbot