# 白噪音柔音哄睡 vs TailScope

白噪音柔音哄睡 and TailScope are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. 白噪音柔音哄睡 sells 2 in-app purchases, starting at $2.99 per month and TailScope sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

白噪音柔音哄睡 ships an update fortnightly, TailScope every 2 weeks. The most recent releases landed on October 7, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | 白噪音柔音哄睡 | TailScope |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 294 MB | 7 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [斌斌 刘](https://appshunter.io/developer/499562451) | [Shanghai Fengcong Technology Co., Ltd.](https://appshunter.io/developer/1640023165) |

## What reviewers say

### 白噪音柔音哄睡

[App page](https://appshunter.io/ios/app/id6771292301)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Membership | $2.99 | per month |
| Yearly Membership | $12.99 | per year |


### TailScope

[App page](https://appshunter.io/ios/app/tailscope/id6802478511)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TailScope Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is 白噪音柔音哄睡 free?

白噪音柔音哄睡 is free to download, with in-app purchases available.

### Is TailScope free?

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

### Do 白噪音柔音哄睡 or TailScope have ads?

Neither 白噪音柔音哄睡 nor TailScope shows ads.

### Which is updated more often, 白噪音柔音哄睡 or TailScope?

白噪音柔音哄睡 ships an update fortnightly, and TailScope every 2 weeks. Most recently, 白噪音柔音哄睡 was updated on October 7, 2026 and TailScope on September 27, 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.*