# Annual Ring vs 白噪音宝宝助眠安抚宝

The clearest difference is in-app purchases: Annual Ring at none against 白噪音宝宝助眠安抚宝's 3. Annual Ring also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). On price and device support there is nothing between them.

Both are free to download. 白噪音宝宝助眠安抚宝 sells 3 in-app purchases, starting at $2.99 per month. Annual Ring asks for nothing beyond the download.

Annual Ring ships an update every 3 weeks, 白噪音宝宝助眠安抚宝 every 5 months. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Annual Ring | 白噪音宝宝助眠安抚宝 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Size | 25 MB | 67 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [颖昭 范](https://appshunter.io/developer/1476704080) | [春文 姜](https://appshunter.io/developer/1623567586) |

## What reviewers say

### Annual Ring

[App page](https://appshunter.io/ios/app/annual-ring/id1605609710)

**Features:** macOS Compatibility

**In-app purchases:** none


### 白噪音宝宝助眠安抚宝

[App page](https://appshunter.io/ios/app/id6476086283)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员订阅 | $2.99 | per month |
| 季度会员订阅 | $3.99 | per 3 months |
| 年度会员 | $4.99 | per year |


## Frequently asked questions

### Is Annual Ring free?

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

### Is 白噪音宝宝助眠安抚宝 free?

白噪音宝宝助眠安抚宝 is free to download, with in-app purchases available.

### Do Annual Ring or 白噪音宝宝助眠安抚宝 have ads?

白噪音宝宝助眠安抚宝 shows ads; Annual Ring does not.

### Which is updated more often, Annual Ring or 白噪音宝宝助眠安抚宝?

Annual Ring ships an update every 3 weeks, and 白噪音宝宝助眠安抚宝 every 5 months. Most recently, Annual Ring was updated on November 7, 2026 and 白噪音宝宝助眠安抚宝 on November 8, 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.*