# geoTools vs Magnetic Detector, Stud Finder

The clearest difference is in-app purchases: geoTools at none against Magnetic Detector, Stud Finder's 4. geoTools also leads on ads (none vs shown) and rating (5.0 vs 4.6). Magnetic Detector, Stud Finder's advantage is update cadence (every 2 months vs every 29 months) and ratings volume (444 vs 3). On price there is nothing between them.

Both are free to download. Magnetic Detector, Stud Finder sells 4 in-app purchases, starting at $4.99 per 7 days. 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: Magnetic Detector, Stud Finder has 444 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 90% of Magnetic Detector, Stud Finder's.

geoTools ships an update every 29 months, Magnetic Detector, Stud Finder every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | geoTools | Magnetic Detector, Stud Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/geotools/id591458160/reviews)** | [4.6 (444 ratings)](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803/reviews) |
| Number of ratings | 3 | **444** |
| Positive reviews | **100.0% of reviews** | 90.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 29 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 30 MB |
| Requires iOS | **8.1** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Andre Molina](https://appshunter.io/developer/503002385) | [Jose Bello](https://appshunter.io/developer/1013437387) |

## What reviewers say

### geoTools

[App page](https://appshunter.io/ios/app/geotools/id591458160)

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.

**Highlights:** Estimate geophysical quantities, Calculate Bouguer anomaly, Estimate magnetic declination, Quick coordinate converter, Geographic to UTM conversion, UTM to geographic conversion, Uses IGRF geomagnetic model

**Features:** macOS Compatibility

**In-app purchases:** none


### Magnetic Detector, Stud Finder

[App page](https://appshunter.io/ios/app/magnetic-detector-stud-finder/id1403751803)

This app uses your device's magnetometer to detect magnetic and electromagnetic fields. It helps locate metal objects, hidden wires, pipes, and even wood studs behind walls. Get real-time readings and alerts to explore your surroundings.

**Highlights:** Detects magnetic and EMF fields, Locates metal objects, wires, and pipes, Finds hidden wood studs behind walls, Real-time magnetic field intensity readings (μT & mG), Active detection beep alerts, Automatic storage of time and measurements

**Features:** Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Full Access | $4.99 | per 7 days |
| Remove Ads - Magnetic Detector | $2.99 | one-time |
| Unlock all - Premium & Warning Beep | $4.99 | one-time |
| Lifetime Full Access | $12.99 | one-time |

**What reviewers like**

- ⭐ Accurate magnetic detection
- 👍 Easy to use and intuitive
- 🔍 Helpful for finding hidden metal objects
- 🔧 Useful for troubleshooting mechanical issues (e.g., magnetized watches)

**What reviewers complain about**

- 💰 Ads can be intrusive in free version
- 🔒 Concerns about privacy and data collection
- 🔋 Potential impact on device battery life

**Reported bugs**

- Readings sometimes inconsistent or stop at certain thresholds
- Compatibility issues with some devices

**Requested features**

- Add support for measuring electric fields
- Improve accuracy and sensitivity
- Provide more detailed readings and analysis


## Frequently asked questions

### Is geoTools free?

geoTools is free to download, with no in-app purchases.

### Is Magnetic Detector, Stud Finder free?

Magnetic Detector, Stud Finder is free to download, with in-app purchases available.

### Which has better reviews, geoTools or Magnetic Detector, Stud Finder?

geoTools is rated higher. geoTools averages 5.0 out of 5 from 3 ratings, while Magnetic Detector, Stud Finder averages 4.6 from 444 ratings.

### Do geoTools or Magnetic Detector, Stud Finder have ads?

Magnetic Detector, Stud Finder shows ads; geoTools does not.

### Which is updated more often, geoTools or Magnetic Detector, Stud Finder?

geoTools ships an update every 29 months, and Magnetic Detector, Stud Finder every 2 months. Most recently, geoTools was updated on November 1, 2026 and Magnetic Detector, Stud Finder on November 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*