Teslameter. vs magnetoboy
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
Read full descriptionHide full description
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.
magnetoboy
This utility app uses your device's magnetometer to measure and visualize magnetic fields. Detect ferromagnetic materials, observe field changes, and even use it for locating hidden objects by attaching a magnet. The app provides visual graphs and optional vibration feedback for strong fields.
- Measure magnetic field strength
- Visualize magnetic fields with graphs
- Detect ferromagnetic materials
- Vibration feedback for strong fields
- Useful for locating hidden objects
- Observe Earth's magnetic field
Read full descriptionHide full description
Use your device's magnetometer, and read out the magnetic field (micro teslas). You can observe and examine the magnetic fields around you. You will find that certain materials change the magnetic field. Such as Iron, magnets, nails, speakers, some metals, electronics, the earth, and more. This may be used to find things, that are ferromagnetic. Change the feedback level to get a vibration when some strong magnetic field is nearby. Observe the graph to visualize the fields around you. Can be used in construction: by attaching a magnet to something behind a wall and use the app to locate the target. The magnetometer, is usually used in navigation to detect the magnetic fields of the earth. The phone must not be in mute for the sound to work.
Screenshots
Verdict
The clearest difference is review sentiment: magnetoboy at 100% against Teslameter.'s 0%. magnetoboy also leads on rating (4.8 vs 2.0) and in-app purchases (none vs 1). On price, ratings volume, device support and iOS requirement 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. magnetoboy asks for nothing beyond the download.
magnetoboy holds the better App Store score, 4.8 against 2.0. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews point the same way: 0% of Teslameter.'s written reviews are positive against 100% of magnetoboy's.
Teslameter. ships an update every 12 months, magnetoboy monthly. The most recent releases landed on October 2, 2026 and September 27, 2026 respectively.
| Parameter | Teslameter. | magnetoboy |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) | 4.8 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 | 5 — better |
| Update frequency | Every 12 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 14 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | margaret kovatch | Smart Bros Ltd co |
Customer experience
Teslameter.
magnetoboy
In-app purchases
Teslameter.
- Remove Ads$1.99
magnetoboy
No in-app purchases
Questions
Is Teslameter. free?
Is magnetoboy free?
Which has better reviews, Teslameter. or magnetoboy?
Do Teslameter. or magnetoboy have ads?
Which is updated more often, Teslameter. or magnetoboy?
Other comparisons
