# iFansum Decibel Meter vs EMF Scan

The clearest difference is ads: iFansum Decibel Meter at none against EMF Scan's shown. iFansum Decibel Meter also leads on update cadence (every 2 days vs weekly). EMF Scan's advantage is iOS requirement (13.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. iFansum Decibel Meter sells 1 in-app purchase, starting at $3.99 per month and EMF Scan sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

iFansum Decibel Meter ships an update every 2 days, EMF Scan weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | iFansum Decibel Meter | EMF Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ifansum-decibel-meter/id6760994620/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 29 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Xinyang iFansum Technology Co., Ltd.](https://appshunter.io/developer/1887187890) | [Yasuhiro Kodama](https://appshunter.io/developer/1895805086) |

## What reviewers say

### iFansum Decibel Meter

[App page](https://appshunter.io/ios/app/ifansum-decibel-meter/id6760994620)

Measure sound levels with this professional tool. It offers A/C/Z weighting and specialized low-frequency detection for various environments. Document noise issues with photos and location data, and export detailed reports.

**Highlights:** Low-frequency detection (1-100 Hz), A/C/Z weighting, Unlimited audio/video recording, Watermark camera with dB readings, History and PDF export, Privacy-focused, local data storage

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter - Monthly Premium | $3.99 | per month |


### 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 |


## Frequently asked questions

### Is iFansum Decibel Meter free?

iFansum Decibel Meter is free to download, with in-app purchases available.

### Is EMF Scan free?

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

### Do iFansum Decibel Meter or EMF Scan have ads?

EMF Scan shows ads; iFansum Decibel Meter does not.

### Which is updated more often, iFansum Decibel Meter or EMF Scan?

iFansum Decibel Meter ships an update every 2 days, and EMF Scan weekly. Most recently, iFansum Decibel Meter was updated on November 5, 2026 and EMF Scan on October 31, 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.*