Teslameter. vs Metal Detector
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Teslameter.
This utility app measures electromagnetic fields around you using your device's compass. It displays readings on X, Y, and Z axes in micro-teslas, along with a magnitude reading. Primarily for entertainment, it detects interference from magnetic objects or potential paranormal activity.
- Measures electromagnetic fields
- Displays X, Y, Z axis readings
- Calculates magnitude reading
- Detects magnetic object interference
- For entertainment purposes
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Teslameter lets you view current electromagnetic fields around you! To use, simply open Teslameter and bring your iPhone close to any ferromagnetic metal such as iron or steel, or any other magnetic object. Teslameter will measure the current magnetic fields on the X, Y, and Z axis in micro-teslas. In addition Teslameter displays a magnitude reading of (X^2+Y^2+Z^2). How exactly does it work? Since the iPhone 3GS/iPhone 4 includes a compass, Teslameter can measure the interference created by a ferromagnetic metal (or paranormal activity). Teslameter is NOT a true teslameter and shouldn't be used for anything but entertainment purposes.
Metal Detector
This utility app transforms your iPhone into a metal detector using its built-in magnetometer. It measures magnetic fields to help you locate ferromagnetic objects like keys, coins, and electronics.
- Measure magnetic field
- Detect coins and metal
- Locate metal objects
- 3D compass
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Transform your iPhone as a metal detector. This app helps you to measure the magnetic field from the target object. It uses the magnetometer to measure the magnetic field when the iPhone is placed near feromagnetic metal objects like speakers, phones, keys, computers, stereos, coins, etc. Features: - Measure magnetic field - Detect Coins and Metal - Help you locate the metal - 3D compass ----- Metal Detector Pro is available with a monthly or annual subscription. You can subscribe and pay through your Apple account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Auto-renew may be turned off after purchase. Terms of Use: https://www.zhihuke.com/metaldetector/terms.html Privacy Policy: https://www.zhihuke.com/metaldetector/privacy.html
Screenshots
Verdict
The clearest difference is review sentiment: Metal Detector at 100% against Teslameter.'s 0%. Metal Detector also leads on rating (5.0 vs 2.0) and ads (none vs shown). Teslameter.'s advantage is ratings volume (3 vs 1) and iOS requirement (12.0 vs 17.0). On price, in-app purchases, monetization model and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Teslameter. sells 1 one-off in-app purchase and Metal Detector sells 2 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.
Metal Detector holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews point the same way: 0% of Teslameter.'s written reviews are positive against 100% of Metal Detector's.
Teslameter. ships an update every 12 months, Metal Detector every 5 months. The most recent releases landed on November 11, 2026 and October 30, 2026 respectively.
| Parameter | Teslameter. | Metal Detector |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 12 months | Every 5 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | margaret kovatch | 杏娣 吴 |
Customer experience
Teslameter.
Metal Detector
In-app purchases
Teslameter.
- Remove Ads$1.99
Metal Detector
- Metal Detector Pro$1.491 Month
- Metal Detector Pro7 Days trial$7.991 Year
Questions
Is Teslameter. free?
Is Metal Detector free?
Which has better reviews, Teslameter. or Metal Detector?
Do Teslameter. or Metal Detector have ads?
Which is updated more often, Teslameter. or Metal Detector?
Other comparisons
