# Deep Decibels vs 脑波玩具

The clearest difference is in-app purchases: 脑波玩具 at none against Deep Decibels's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Deep Decibels sells 2 in-app purchases, starting at $2.99 per month. 脑波玩具 asks for nothing beyond the download.

Deep Decibels ships an update every 2 weeks, 脑波玩具 fortnightly. The most recent releases landed on October 25, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Deep Decibels | 脑波玩具 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Size | 109 MB | 6 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Alejandro Cerrillo Gutierrez](https://appshunter.io/developer/1826410785) | [Beijing Nashi Huakai Technology Co., Ltd.](https://appshunter.io/developer/946737411) |

## What reviewers say

### Deep Decibels

[App page](https://appshunter.io/ios/app/deep-decibels/id6748611031)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $2.99 | per month |
| Premium Access | $19.99 | per year |


### 脑波玩具

[App page](https://appshunter.io/ios/app/id6800048461)

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

**In-app purchases:** none


## Frequently asked questions

### Is Deep Decibels free?

Deep Decibels is free to download, with in-app purchases available.

### Is 脑波玩具 free?

脑波玩具 is free to download, with no in-app purchases.

### Do Deep Decibels or 脑波玩具 have ads?

Neither Deep Decibels nor 脑波玩具 shows ads.

### Which is updated more often, Deep Decibels or 脑波玩具?

Deep Decibels ships an update every 2 weeks, and 脑波玩具 fortnightly. Most recently, Deep Decibels was updated on October 25, 2026 and 脑波玩具 on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*