# Necrometer vs EMF Detector

The clearest difference is price: EMF Detector at Free against Necrometer's $9.99. EMF Detector also leads on rating (4.3 vs 2.7) and update cadence (every 2 weeks vs every 9 months). Necrometer's advantage is in-app purchases (none vs 3) and chart position (#11 vs unranked). On review sentiment, ratings volume, ads and device support there is nothing between them.

EMF Detector is free to download; Necrometer costs $9.99 up front. EMF Detector sells 2 in-app purchases, starting at $4.99 per month. Necrometer asks for nothing beyond the download.

EMF Detector holds the better App Store score, 4.3 against 2.7. Both are backed by a comparable volume of ratings — 271 and 319 respectively. Written reviews complicate that: 31% of Necrometer's written reviews are positive against 25% of EMF Detector's, so the app with the better star average is not the one people write more warmly about.

Necrometer ships an update every 9 months, EMF Detector every 2 weeks. The most recent releases landed on October 12, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Necrometer | EMF Detector |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [2.7 (271 ratings)](https://appshunter.io/ios/app/necrometer/id1670762759/reviews) | **[4.3 (319 ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713/reviews)** |
| Number of ratings | 271 | **319** |
| Positive reviews | **30.6% of reviews** | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#11** | — |
| Size | 174 MB | 11 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [BitPlague LLC](https://appshunter.io/developer/1119043156) | [新雨 李](https://appshunter.io/developer/1559932632) |

## What reviewers say

### Necrometer

[App page](https://appshunter.io/ios/app/necrometer/id1670762759)

**Currently charting:** #11 Top Paid · Utilities, #102 Top Paid (US App Store)

This app is designed for ghost hunters and paranormal investigators. It detects magnetic energy fluctuations and facilitates spirit communication through text and speech modes using AI-powered systems and audio effects. It aims to provide insights and messages from the other side.

**Highlights:** Magnetic energy detection meter, Text-based spirit communication, AI-powered speech generation, Customizable voice and audio effects, Access to over 60,000 words/phrases, Custom word list functionality

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🌟 Accurate responses
- 👍 Useful for paranormal investigations
- 🤖 Unique voice options

**What reviewers complain about**

- 🔇 Audio issues (no sound, language not in English)
- 🤖 Unreliable/inconsistent speech/text responses
- 💰 Overpriced for features provided
- 🔍 Lack of customization options

**Reported bugs**

- Audio not working on certain devices
- Random/irrelevant responses

**Requested features**

- Ability to save/review past session logs
- Multi-language support
- Custom word list functionality


### EMF Detector

[App page](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713)

Transform your iPhone into an EMF detector to monitor electromagnetic fields. Identify radiation levels in various environments to assess safety at home, work, or in public spaces. Gain insights to make informed decisions about your surroundings.

**Highlights:** EMF monitoring, Electromagnetic field detection, Radiation level measurement, Environmental safety assessment, Real-time EMF readings

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unlimited features | $4.99 | per month |
| unlimited features | $14.99 | one-time |


## Frequently asked questions

### Is Necrometer free?

Necrometer costs $9.99, with no in-app purchases.

### Is EMF Detector free?

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

### Which has better reviews, Necrometer or EMF Detector?

EMF Detector is rated higher. Necrometer averages 2.7 out of 5 from 271 ratings, while EMF Detector averages 4.3 from 319 ratings.

### Do Necrometer or EMF Detector have ads?

Neither Necrometer nor EMF Detector shows ads.

### Which is updated more often, Necrometer or EMF Detector?

Necrometer ships an update every 9 months, and EMF Detector every 2 weeks. Most recently, Necrometer was updated on October 12, 2026 and EMF Detector on October 13, 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.*