# Gamma 40 Hertz vs みみ年齢

The clearest difference is in-app purchases: みみ年齢 at none against Gamma 40 Hertz's 1. Gamma 40 Hertz's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Gamma 40 Hertz sells 1 one-off in-app purchase. みみ年齢 asks for nothing beyond the download.

## The numbers

| Metric | Gamma 40 Hertz | みみ年齢 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (32 ratings)](https://appshunter.io/ios/app/gamma-40-hertz/id6444579052/reviews)** | — |
| Number of ratings | **32** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 9 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alterscope Solutions LLC](https://appshunter.io/developer/1551052588) | [satoshi amasaki](https://appshunter.io/developer/1891268722) |

## What reviewers say

### Gamma 40 Hertz

[App page](https://appshunter.io/ios/app/gamma-40-hertz/id6444579052)

This app offers a brain boost by stimulating 40 hertz gamma waves through light, sound, and touch. Research suggests this can help reverse age-related declines. It features adjustable intensity for multimodal stimulation.

**Highlights:** Multimodal stimulation (sound, touch, sight), Adjustable intensity, 40 Hz audio tone, 40 Hz haptic vibration, 40 Hz visual signal (flashlight), 40 Hz screen oscillation

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### みみ年齢

[App page](https://appshunter.io/ios/app/id6772969607)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gamma 40 Hertz free?

Gamma 40 Hertz is free to download, with in-app purchases available.

### Is みみ年齢 free?

みみ年齢 is free to download, with no in-app purchases.

### Do Gamma 40 Hertz or みみ年齢 have ads?

Both Gamma 40 Hertz and みみ年齢 show ads.

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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.*