# Attenuator vs EMF Detector

The clearest difference is review sentiment: Attenuator at 100% against EMF Detector's 25%. Attenuator also leads on rating (5.0 vs 4.3). EMF Detector's advantage is update cadence (every 2 weeks vs every 7 months) and ratings volume (319 vs 8). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Attenuator sells 1 one-off in-app purchase and EMF Detector sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Attenuator holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: EMF Detector has 319 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of Attenuator's written reviews are positive against 25% of EMF Detector's.

Attenuator ships an update every 7 months, EMF Detector every 2 weeks. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Attenuator | EMF Detector |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/attenuator/id367216554/reviews)** | [4.3 (319 ratings)](https://appshunter.io/ios/app/emf-detector-radiation-reader/id6572300713/reviews) |
| Number of ratings | 8 | **319** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 1 MB | 11 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tim E. Burrow](https://appshunter.io/developer/367216557) | [新雨 李](https://appshunter.io/developer/1559932632) |

## What reviewers say

### Attenuator

[App page](https://appshunter.io/ios/app/attenuator/id367216554)

Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.

**Highlights:** Calculate output voltage and power, Specify input voltage (Vpp or Vrms), Calculate attenuation in dB, NMR pulse calculations, Measure local magnetic field, Display barometric pressure

**In-app purchases (1)**

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


### 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 Attenuator free?

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

### Is EMF Detector free?

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

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

Attenuator is rated higher. Attenuator averages 5.0 out of 5 from 8 ratings, while EMF Detector averages 4.3 from 319 ratings.

### Do Attenuator or EMF Detector have ads?

Neither Attenuator nor EMF Detector shows ads.

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

Attenuator ships an update every 7 months, and EMF Detector every 2 weeks. Most recently, Attenuator was updated on September 14, 2026 and EMF Detector on September 21, 2026.

---

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