# 白噪音 vs 绵眠

The clearest difference is ads: 绵眠 at none against 白噪音's shown. 白噪音's advantage is update cadence (every 3 days vs every 3 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

白噪音 ships an update every 3 days, 绵眠 every 3 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | 白噪音 | 绵眠 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1533050088/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 3 months |
| Size | 12 MB | 133 MB |
| Requires iOS | **10.0** | 11.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [族兴 林](https://appshunter.io/developer/1578710558) | [Shanghai Qianfenzhiyi Information Technology Co., Ltd.](https://appshunter.io/developer/1701362512) |

## What reviewers say

### 白噪音

[App page](https://appshunter.io/ios/app/id1533050088)

**Features:** macOS Compatibility

**In-app purchases:** none


### 绵眠

[App page](https://appshunter.io/ios/app/id6470334085)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 白噪音 free?

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

### Is 绵眠 free?

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

### Do 白噪音 or 绵眠 have ads?

白噪音 shows ads; 绵眠 does not.

### Which is updated more often, 白噪音 or 绵眠?

白噪音 ships an update every 3 days, and 绵眠 every 3 months. Most recently, 白噪音 was updated on October 24, 2026 and 绵眠 on October 14, 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.*