# bluSensor vs Metal Detector EMF

The clearest difference is review sentiment: Metal Detector EMF at 68% against bluSensor's 0%. Metal Detector EMF also leads on rating (4.7 vs 1.0) and ratings volume (2.4K vs 5). bluSensor's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Metal Detector EMF sells 1 one-off in-app purchase. bluSensor asks for nothing beyond the download.

Metal Detector EMF holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Metal Detector EMF has 2.4K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of bluSensor's written reviews are positive against 68% of Metal Detector EMF's.

bluSensor ships an update every 2 months, Metal Detector EMF every 9 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | bluSensor | Metal Detector EMF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (5 ratings)](https://appshunter.io/ios/app/blusensor/id1018752395/reviews) | **[4.7 (2.4K ratings)](https://appshunter.io/ios/app/metal-detector-emf/id1073102084/reviews)** |
| Number of ratings | 5 | **2.4K** |
| Positive reviews | 0.0% of reviews | **68.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 31 MB | 11 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Almendo Technologies GmbH](https://appshunter.io/developer/1018752244) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### bluSensor

[App page](https://appshunter.io/ios/app/blusensor/id1018752395)

Monitor temperature, humidity, and air quality with wireless sensors. Get real-time data, alerts, and historical tracking on your smartphone or tablet. Suitable for home and professional environments.

**Highlights:** Real-time environmental monitoring, Temperature and humidity tracking, Air quality alerts, Historical data logging, Smartphone and tablet compatibility, Web app access

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Metal Detector EMF

[App page](https://appshunter.io/ios/app/metal-detector-emf/id1073102084)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AdBlock - Remove ads | $1.99 | one-time |

**What reviewers like**

- 🚀 Works great
- 👍 Surprisingly accurate
- 🔍 Helpful for finding lost items
- 💡 Innovative use of phone sensors
- 🔍 Useful for locating property markers

**What reviewers complain about**

- 🐛 Inconsistent performance
- 🔍 Limited detection range
- 🔍 Only detects magnetic metals
- 🔋 Drains battery quickly

**Reported bugs**

- Settings page not functioning
- App crashes on some devices
- Inaccurate readings in certain situations

**Requested features**

- Ability to detect non-magnetic metals
- Improved sensitivity and detection range
- Option to calibrate the sensor
- Metal identification feature


## Frequently asked questions

### Is bluSensor free?

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

### Is Metal Detector EMF free?

Metal Detector EMF is free to download, with in-app purchases available.

### Which has better reviews, bluSensor or Metal Detector EMF?

Metal Detector EMF is rated higher. bluSensor averages 1.0 out of 5 from 5 ratings, while Metal Detector EMF averages 4.7 from 2.4K ratings.

### Do bluSensor or Metal Detector EMF have ads?

Neither bluSensor nor Metal Detector EMF shows ads.

### Which is updated more often, bluSensor or Metal Detector EMF?

bluSensor ships an update every 2 months, and Metal Detector EMF every 9 months. Most recently, bluSensor was updated on October 13, 2026 and Metal Detector EMF on October 15, 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.*