# Sleep Note vs ShiroWalk

The clearest difference is in-app purchases: Sleep Note at none against ShiroWalk's 7. Sleep Note also leads on iOS requirement (15.1 vs 17.0). ShiroWalk's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. ShiroWalk sells 7 in-app purchases, starting at $2.99 per month. Sleep Note asks for nothing beyond the download.

Sleep Note ships an update every 4 days, ShiroWalk every 5 days. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Sleep Note | ShiroWalk |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 days |
| Size | 38 MB | 212 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kengo Kanehiro](https://appshunter.io/developer/1869857869) | [hiroaki suzuki](https://appshunter.io/developer/1477004044) |

## What reviewers say

### Sleep Note

[App page](https://appshunter.io/ios/app/sleep-note/id6758096161)

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

**In-app purchases:** none


### ShiroWalk

[App page](https://appshunter.io/ios/app/shirowalk-castle-walk/id6772928347)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Annual Premium | $29.99 | per year |
| Castle Boost Small | $0.99 | one-time |
| Castle Select Ticket | $0.99 | one-time |
| Castle Boost Medium | $1.99 | one-time |
| Castle Boost Large | $2.99 | one-time |
| Founder Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Sleep Note free?

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

### Is ShiroWalk free?

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

### Do Sleep Note or ShiroWalk have ads?

Sleep Note shows ads; ShiroWalk does not.

### Which is updated more often, Sleep Note or ShiroWalk?

Sleep Note ships an update every 4 days, and ShiroWalk every 5 days. Most recently, Sleep Note was updated on October 10, 2026 and ShiroWalk on October 28, 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.*