# Tone Generator vs EMF Scan

The clearest difference is in-app purchases: Tone Generator at none against EMF Scan's 1. EMF Scan's advantage is iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. EMF Scan sells 1 one-off in-app purchase. Tone Generator asks for nothing beyond the download.

Tone Generator ships an update every 2 weeks, EMF Scan weekly. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Tone Generator | EMF Scan |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 5 MB | 29 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eiji Chiba](https://appshunter.io/developer/1818574673) | [Yasuhiro Kodama](https://appshunter.io/developer/1895805086) |

## What reviewers say

### Tone Generator

[App page](https://appshunter.io/ios/app/tone-generator/id6746802859)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Tone Generator free?

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

### Is EMF Scan free?

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

### Do Tone Generator or EMF Scan have ads?

Both Tone Generator and EMF Scan show ads.

### Which is updated more often, Tone Generator or EMF Scan?

Tone Generator ships an update every 2 weeks, and EMF Scan weekly. Most recently, Tone Generator was updated on September 30, 2026 and EMF Scan on September 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.*