# M vs Frequency Generator

The clearest difference is update cadence: Frequency Generator at weekly against M's every 15 months. M's advantage is iOS requirement (9.0 vs 17). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

M ships an update every 15 months, Frequency Generator weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | M | Frequency Generator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Weekly** |
| Size | 27 MB | 4 MB |
| Requires iOS | **9.0** | 17 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Huzhou Haidemu Intelligence Technology Co., Ltd.](https://appshunter.io/developer/1635785436) | [Nhat Linh Dang](https://appshunter.io/developer/1857899120) |

## What reviewers say

### M

[App page](https://appshunter.io/ios/app/m-motion-bed/id1635785434)

**Features:** macOS Compatibility

**In-app purchases:** none


### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generator-sound-test/id6785086354)

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

**In-app purchases:** none


## Frequently asked questions

### Is M free?

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

### Is Frequency Generator free?

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

### Do M or Frequency Generator have ads?

Neither M nor Frequency Generator shows ads.

### Which is updated more often, M or Frequency Generator?

M ships an update every 15 months, and Frequency Generator weekly. Most recently, M was updated on November 7, 2026 and Frequency Generator 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.*