# SHINKAI 深海 vs KEEPYBOO

The clearest difference is in-app purchases: SHINKAI 深海 at none against KEEPYBOO's 10. SHINKAI 深海 also leads on ads (none vs shown). KEEPYBOO's advantage is update cadence (every 2 days vs every 4 days) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. KEEPYBOO sells 10 one-off in-app purchases. SHINKAI 深海 asks for nothing beyond the download.

SHINKAI 深海 ships an update every 4 days, KEEPYBOO every 2 days. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | SHINKAI 深海 | KEEPYBOO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | **Every 2 days** |
| Size | 1 MB | 99 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Shota Katsuyama](https://appshunter.io/developer/6792005346) | [株式会社ビット](https://appshunter.io/developer/6813510089) |

## What reviewers say

### SHINKAI 深海

[App page](https://appshunter.io/ios/app/shinkai/id6792005464)

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

**In-app purchases:** none


### KEEPYBOO

[App page](https://appshunter.io/ios/app/keepyboo-ghost-logic-puzzle/id6813510087)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Theme: Halloween | $0.99 | one-time |
| Theme: Toy Box | $0.99 | one-time |
| Theme: Comic Hero | $0.99 | one-time |
| Theme: Pixel Castle | $0.99 | one-time |
| Sound: Koto Strings | $0.99 | one-time |
| Sound: Water Drops | $0.99 | one-time |
| Sound: 80s Ghost | $0.99 | one-time |
| ULTIMATE Pack | $1.99 | one-time |
| EXTREME Pack | $3.99 | one-time |
| Remove Ads | $4.99 | one-time |


## Frequently asked questions

### Is SHINKAI 深海 free?

SHINKAI 深海 is free to download, with no in-app purchases.

### Is KEEPYBOO free?

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

### Do SHINKAI 深海 or KEEPYBOO have ads?

KEEPYBOO shows ads; SHINKAI 深海 does not.

### Which is updated more often, SHINKAI 深海 or KEEPYBOO?

SHINKAI 深海 ships an update every 4 days, and KEEPYBOO every 2 days. Most recently, SHINKAI 深海 was updated on October 31, 2026 and KEEPYBOO on November 6, 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.*