# Sleep Nook vs SleepDiary

The clearest difference is price: SleepDiary at Free against Sleep Nook's $1.99. SleepDiary also leads on device support (3 vs 1). Sleep Nook's advantage is in-app purchases (none vs 3). On update cadence, ads and iOS requirement there is nothing between them.

SleepDiary is free to download; Sleep Nook costs $1.99 up front. SleepDiary sells 3 in-app purchases, starting at $0.99 per month. Sleep Nook asks for nothing beyond the download.

Sleep Nook ships an update weekly, SleepDiary every 5 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Sleep Nook | SleepDiary |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Size | 24 MB | 4 MB |
| Requires iOS | **18.2** | 18.6 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [锦泉 严](https://appshunter.io/developer/1842644226) | [璐 王](https://appshunter.io/developer/1884213493) |

## What reviewers say

### Sleep Nook

[App page](https://appshunter.io/ios/app/sleep-nook/id6753137736)

**Features:** macOS Compatibility

**In-app purchases:** none


### SleepDiary

[App page](https://appshunter.io/ios/app/sleepdiary/id6760534533)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 睡眠声音日记 Pro | $0.99 | per month |
| 睡眠声音日记 Pro | $4.99 | per year |
| 睡眠日记 Pro | $9.99 | one-time |


## Frequently asked questions

### Is Sleep Nook free?

Sleep Nook costs $1.99, with no in-app purchases.

### Is SleepDiary free?

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

### Do Sleep Nook or SleepDiary have ads?

Neither Sleep Nook nor SleepDiary shows ads.

### Which is updated more often, Sleep Nook or SleepDiary?

Sleep Nook ships an update weekly, and SleepDiary every 5 days. Most recently, Sleep Nook was updated on October 2, 2026 and SleepDiary on October 1, 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.*