Magnetometer+ Metal Detector Downloads & RevenueMagnetometer+ Metal Detector · App Store
Not in any tracked top chart right now.
Updated 12 Nov 2026 · rankings refresh through the day
DeveloperKyu-Hee Jang
CategoryProductivity
PriceFree
Released
Rating★ 3.0 (8)
Version1.0.34
Age rating17+
First seen by us
23 Oct 2026
23 Oct 2026Installs (est.)1k+ worldwide
Magnetometer+ Metal Detector update history & changes
Last change · 5 events since 10 Mar 2026Full timeline ↓Full timeline · 5 events
- ✏️Magnetometer+ Metal Detector: app got bigger65 MB → 92 MB (+43%)
- 📦Magnetometer+ Metal Detector updated to version 1.0.34• Stud Finder now offers a Ready-check: hold the phone in the air, then pass it over a screw you can see, and Magnetometer+ learns how strongly this phone reacts before you scan a wall. It takes under 30 seconds.
• The app has been rebuilt on a newer, shared foundation with a refreshed opening screen, menu and exit dialog.
• Your saved measurements, calibration and settings carry over unchanged.… more - 🆕Magnetometer+ Metal Detector first spotted by AppInsiderUnited States (found via developer)
- 📦Magnetometer+ Metal Detector version 1.0.33• During calibration, “Zero here” and “Zero” are greyed out, so tapping cannot restart it. Both work again afterwards.
• With no field readings after about 3 seconds of on-screen measuring, Meter, Scanner, STUD FINDER and Compass show “No magnetic sensor signal” instead of continued turning instructions. This applies only before the first valid reading since launch; after one arrives, the card stays hidden until the app exits.
• Measuring begins after the opening screen closes.… more - 🆕Magnetometer+ Metal Detector released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.0 ★
8 ratings
Measured
Magnetometer+ Metal Detector on the App Store
App details
App ID
6760181481
Publisher
Kyu-Hee Jang
On the store since
Mar 2026
Under a year
Minimum OS
iOS 16.4+
iPhone 8 and later
Devices
iPhone · iPad
Content rating
17+
Languages
1
EN
Size
92 MB
Also listed in
Utilities
Magnetometer+ Metal Detector downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
3.0 ★
8 ratings
Measured
Ratings
8
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
3.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% of Productivity apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Magnetometer+ Metal Detector
Magnetometer+ turns your iPhone's magnetic sensor into a metal detector and stud finder for iron and steel hidden in walls, floors and furniture, and shows the magnetic field around you in µT.
▶ WHAT IT FINDS — AND WHAT IT DOES NOT
It detects ferrous metal: screws and nails in studs and joists, steel pipes, rebar, hinges, brackets and door strikes. The range is a few centimetres, so hold the phone against the surface and sweep slowly.
It cannot detect gold, silver, copper, aluminium, wood or plastic. Those materials are not magnetic, and no phone sensor can find them. If you are looking for buried coins or copper wiring, this is not the tool.
▶ CALIBRATES FROM YOUR HAND
Every phone's magnetic sensor carries a large built-in offset from its own speaker and battery magnets. Magnetometer+ learns that offset while you turn the phone, so tilting the phone does not look like metal. When the meter opens, a progress bar shows how far calibration has come: turn the phone slowly in every direction, and when the bar is full the reading goes live with a short vibration. Zero here re-learns it wherever you are.
▶ THREE METER MODES
• Auto — a radial gauge of the field deviation
• Earth Field — total field strength with a latitude band (low, normal, elevated, high)
• Metal Detector — deviation from the background field with an intensity verdict, plus optional vibration pulses that quicken as you get closer
▶ SCANNER AND STUD FINDER
The Scanner tab has a metal scanner for sweeping a surface and a Stud Finder that marks the strongest point as you slide the phone flat across a wall. It finds the nails and screws that hold drywall to the studs; it does not see the wood itself.
▶ COMPASS
A compass with magnetic north or true north and the local declination.
▶ LIVE DATA
• X, Y and Z field components on a live chart
• Min, average, max and peak with elapsed time
• Sensitivity from 0.5x to 2.0x
• µT, mT and Gauss units
▶ HISTORY AND EXPORT
• Readings are saved with a 7-day trend and a plain-language comparison
• Favourites and side-by-side comparison of two readings
• Continuous one-second logging with CSV export
• Share a reading as an image, optional GPS tag on saved readings
• Statistics report, unlocked for 24 hours by watching a short ad
USEFUL FOR DIY AND RENOVATION · FINDING STUDS AND JOISTS · CHECKING FOR REBAR OR PIPES BEFORE DRILLING · PHYSICS CLASS AND MAGNET EXPERIMENTS
▶ WHAT IT FINDS — AND WHAT IT DOES NOT
It detects ferrous metal: screws and nails in studs and joists, steel pipes, rebar, hinges, brackets and door strikes. The range is a few centimetres, so hold the phone against the surface and sweep slowly.
It cannot detect gold, silver, copper, aluminium, wood or plastic. Those materials are not magnetic, and no phone sensor can find them. If you are looking for buried coins or copper wiring, this is not the tool.
▶ CALIBRATES FROM YOUR HAND
Every phone's magnetic sensor carries a large built-in offset from its own speaker and battery magnets. Magnetometer+ learns that offset while you turn the phone, so tilting the phone does not look like metal. When the meter opens, a progress bar shows how far calibration has come: turn the phone slowly in every direction, and when the bar is full the reading goes live with a short vibration. Zero here re-learns it wherever you are.
▶ THREE METER MODES
• Auto — a radial gauge of the field deviation
• Earth Field — total field strength with a latitude band (low, normal, elevated, high)
• Metal Detector — deviation from the background field with an intensity verdict, plus optional vibration pulses that quicken as you get closer
▶ SCANNER AND STUD FINDER
The Scanner tab has a metal scanner for sweeping a surface and a Stud Finder that marks the strongest point as you slide the phone flat across a wall. It finds the nails and screws that hold drywall to the studs; it does not see the wood itself.
▶ COMPASS
A compass with magnetic north or true north and the local declination.
▶ LIVE DATA
• X, Y and Z field components on a live chart
• Min, average, max and peak with elapsed time
• Sensitivity from 0.5x to 2.0x
• µT, mT and Gauss units
▶ HISTORY AND EXPORT
• Readings are saved with a 7-day trend and a plain-language comparison
• Favourites and side-by-side comparison of two readings
• Continuous one-second logging with CSV export
• Share a reading as an image, optional GPS tag on saved readings
• Statistics report, unlocked for 24 hours by watching a short ad
USEFUL FOR DIY AND RENOVATION · FINDING STUDS AND JOISTS · CHECKING FOR REBAR OR PIPES BEFORE DRILLING · PHYSICS CLASS AND MAGNET EXPERIMENTS
Latest updates
1.0.34
• Stud Finder now offers a Ready-check: hold the phone in the air, then pass it over a screw you can see, and Magnetometer+ learns how strongly this phone reacts before you scan a wall. It takes under 30 seconds.
• The app has been rebuilt on a newer, shared foundation with a refreshed opening screen, menu and exit dialog.
• Your saved measurements, calibration and settings carry over unchanged.
1.0.33
• During calibration, “Zero here” and “Zero” are greyed out, so tapping cannot restart it. Both work again afterwards.
• With no field readings after about 3 seconds of on-screen measuring, Meter, Scanner, STUD FINDER and Compass show “No magnetic sensor signal” instead of continued turning instructions. This applies only before the first valid reading since launch; after one arrives, the card stays hidden until the app exits.
• Measuring begins after the opening screen closes.
Store changes
What Magnetometer+ Metal Detector changed on its store page: name, icon, screenshots, price, size, languages, requirements.
App got bigger
65 MB → 92 MB (+43%)
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