# 寝落ち専用 vs baby shark stack

The clearest difference is in-app purchases: 寝落ち専用 at none against baby shark stack's 1. 寝落ち専用 also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). baby shark stack's advantage is update cadence (every 10 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. baby shark stack sells 1 one-off in-app purchase. 寝落ち専用 asks for nothing beyond the download.

寝落ち専用 ships an update every 6 weeks, baby shark stack every 10 days. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 寝落ち専用 | baby shark stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Size | 18 MB | 96 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Goki kusunoki](https://appshunter.io/developer/376557641) | [Masakazu Sakata](https://appshunter.io/developer/1445504084) |

## What reviewers say

### 寝落ち専用

[App page](https://appshunter.io/ios/app/id1033049415)

**In-app purchases:** none


### baby shark stack

[App page](https://appshunter.io/ios/app/baby-shark-stack/id1628458636)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ads Remove | $3.99 | one-time |


## Frequently asked questions

### Is 寝落ち専用 free?

寝落ち専用 is free to download, with no in-app purchases.

### Is baby shark stack free?

baby shark stack is free to download, with in-app purchases available.

### Do 寝落ち専用 or baby shark stack have ads?

baby shark stack shows ads; 寝落ち専用 does not.

### Which is updated more often, 寝落ち専用 or baby shark stack?

寝落ち専用 ships an update every 6 weeks, and baby shark stack every 10 days. Most recently, 寝落ち専用 was updated on November 2, 2026 and baby shark stack on November 7, 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.*