# EMF Scan vs Noise Level Meter

The clearest difference is ads: Noise Level Meter at none against EMF Scan's shown. EMF Scan's advantage is iOS requirement (13.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. EMF Scan sells 1 one-off in-app purchase and Noise Level Meter sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 14, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | EMF Scan | Noise Level Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (4 ratings)](https://appshunter.io/ios/app/noise-level-meter-spectroid/id6798899899/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 18 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasuhiro Kodama](https://appshunter.io/developer/1895805086) | [Kostiantyn Liubevych](https://appshunter.io/developer/1734302743) |

## What reviewers say

### EMF Scan

[App page](https://appshunter.io/ios/app/emf-scan/id6770155541)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $0.99 | one-time |


### Noise Level Meter

[App page](https://appshunter.io/ios/app/noise-level-meter-spectroid/id6798899899)

This app transforms your iPhone into a sophisticated sound level meter and frequency analyzer. It offers instant decibel readings, detailed spectrum analysis, and the ability to save and export measurement sessions. Designed for various everyday uses, it provides clear and beautiful sound measurement.

**Highlights:** Live decibel meter, FFT spectrum analyzer, Octave-band visualization, Record measurement sessions, Export PDF reports, Calibration offset

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $3.99 | per 7 days |
| Annual Plan | $29.99 | per year |
| Spectroid Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is EMF Scan free?

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

### Is Noise Level Meter free?

Noise Level Meter is free to download, with in-app purchases available.

### Do EMF Scan or Noise Level Meter have ads?

EMF Scan shows ads; Noise Level Meter does not.

### Which is updated more often, EMF Scan or Noise Level Meter?

EMF Scan ships an update weekly, and Noise Level Meter weekly. Most recently, EMF Scan was updated on October 14, 2026 and Noise Level Meter on October 29, 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.*