# 白噪音 vs Now睡眠

The clearest difference is ads: Now睡眠 at none against 白噪音's shown. 白噪音's advantage is update cadence (every 8 days vs every 2 weeks) and iOS requirement (11.0 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 白噪音 sells 3 in-app purchases, starting at $1.99 per month and Now睡眠 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

白噪音 ships an update every 8 days, Now睡眠 every 2 weeks. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 白噪音 | Now睡眠 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Size | 93 MB | 41 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [魁鹏 宋](https://appshunter.io/developer/977980685) | [亚琼 刘](https://appshunter.io/developer/1528119356) |

## What reviewers say

### 白噪音

[App page](https://appshunter.io/ios/app/id1629064155)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $1.99 | per month |
| 季度会员 | $4.49 | per 3 months |
| 年会员 | $14.49 | per year |


### Now睡眠

[App page](https://appshunter.io/ios/app/now/id6480343731)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 终生VIP | $0.99 | one-time |


## Frequently asked questions

### Is 白噪音 free?

白噪音 is free to download, with in-app purchases available.

### Is Now睡眠 free?

Now睡眠 is free to download, with in-app purchases available.

### Do 白噪音 or Now睡眠 have ads?

白噪音 shows ads; Now睡眠 does not.

### Which is updated more often, 白噪音 or Now睡眠?

白噪音 ships an update every 8 days, and Now睡眠 every 2 weeks. Most recently, 白噪音 was updated on October 7, 2026 and Now睡眠 on October 12, 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.*