geoTools vs Metal Detector EMF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
geoTools
This app provides tools for geological, geophysical, engineering, and geographic work. It helps estimate geophysical quantities like Bouguer anomaly and magnetic declination, and offers a quick coordinate converter. It's designed for professionals and enthusiasts interested in Earth Sciences.
- Estimate geophysical quantities
- Calculate Bouguer anomaly
- Estimate magnetic declination
- Quick coordinate converter
- Geographic to UTM conversion
- UTM to geographic conversion
- Uses IGRF geomagnetic model
Read full descriptionHide full description
geoTools is a set of tools to use in geologic, geophysical, engineering and geographic work. It includes the estimation of important geophysical quantities, such as Bouguer anomaly, topography, magnetic declination, and so on, and a quick coordinate converter. The ideal companion for a geologist, a geophysicist, an engineer, a geographer, and to any person interested in the Earth Sciences. The easiest and more effective way to calculate the parameters associated to the Earth's gravity field and magnetic field. Convert coordinates from geographic to Universal Transverse Mercator and vice-versa with one touch, using different reference systems. Since 2018 the app uses the new IGRF geomagnetic model to estimate the magnetic parameters. All the tests we've made show very good results. PLEASE NOTICE: geoTools is free, no ads, no purchases, absolutely free! If you use it, please let a review to help us keep upgrading the app. It is simple, fast, and very important to us!
Metal Detector EMF
This application uses your smartphone's magnetic sensor to detect nearby metal objects. It can help you find hidden metallic items, act as a treasure hunting tool, or even assist in ghost hunting by visualizing magnetic field trends. Requires a device with a magnetic sensor to function.
- Detects nearby metal
- Measures magnetic field
- Finds hidden metallic objects
- Acts as a treasure hunter tool
- Assists ghost hunters
- Visualizes reading trends with a graph
Read full descriptionHide full description
Metal Detector EMF detects the presence of metal nearby. Metal detectors measure magnetic field value using a magnetic sensor that is built into your smartphone. Now You can easily find metallic objects that are hidden underground, behind walls etc. , or be a treasure hunter or ghost hunters, also see a reading trend through the graph. Simple app in your device called Gauss Meter are used for measuring the Earth's magnetic field but can't detect silver, gold, copper coins (non-ferrous - no magnetic field). This Magnetometer app require a magnetic sensor otherwise does not work.
Screenshots
Verdict
The clearest difference is in-app purchases: geoTools at none against Metal Detector EMF's 1. geoTools also leads on review sentiment (100% vs 68%) and rating (5.0 vs 4.6). Metal Detector EMF's advantage is ratings volume (2.5K vs 3) and update cadence (every 9 months vs every 29 months). On price, ads 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. Metal Detector EMF sells 1 one-off in-app purchase. geoTools asks for nothing beyond the download.
geoTools holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Metal Detector EMF has 2.5K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of geoTools's written reviews are positive against 68% of Metal Detector EMF's.
geoTools ships an update every 29 months, Metal Detector EMF every 9 months. The most recent releases landed on October 23, 2026 and November 2, 2026 respectively.
| Parameter | geoTools | Metal Detector EMF |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.6 (2.5K ratings) |
| Positive reviews | 100.0% of reviews — better | 68.4% of reviews |
| Number of ratings | 3 | 2.5K — better |
| Update frequency | Every 29 months | Every 9 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Molina | ExaMobile S.A. |
Customer experience
geoTools
Metal Detector EMF
Bugs and requests
geoTools
Not enough reviews yet to summarise bugs or requests.
Metal Detector EMF
Reported bugs
3 issues- Settings page not functioning
- App crashes on some devices
- Inaccurate readings in certain situations
Requested features
4 requests- Ability to detect non-magnetic metals
- Improved sensitivity and detection range
- Option to calibrate the sensor
- Metal identification feature
In-app purchases
geoTools
No in-app purchases
Metal Detector EMF
- AdBlock - Remove ads$1.99
Questions
Is geoTools free?
Is Metal Detector EMF free?
Which has better reviews, geoTools or Metal Detector EMF?
Do geoTools or Metal Detector EMF have ads?
Which is updated more often, geoTools or Metal Detector EMF?
Other comparisons
