# Mysterious Creatures vs 不思議コレクション 大人の図鑑

The clearest difference is review sentiment: 不思議コレクション 大人の図鑑 at 100% against Mysterious Creatures's 0%. 不思議コレクション 大人の図鑑 also leads on rating (5.0 vs 3.4). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

不思議コレクション 大人の図鑑 holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 0% of Mysterious Creatures's written reviews are positive against 100% of 不思議コレクション 大人の図鑑's.

Mysterious Creatures ships an update every 4 months, 不思議コレクション 大人の図鑑 every 3 months. The most recent releases landed on September 11, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Mysterious Creatures | 不思議コレクション 大人の図鑑 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/mysterious-creatures/id457832536/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/id6473504959/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Ad-supported | Ad-supported |
| Size | 13 MB | 141 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masakazu Yonehara](https://appshunter.io/developer/1339210794) | [ArtsPlanet](https://appshunter.io/developer/661686993) |

## What reviewers say

### Mysterious Creatures

[App page](https://appshunter.io/ios/app/mysterious-creatures/id457832536)

Engage in a unique seek-and-find experience by sifting through virtual shirasu to discover hidden sea creatures. Collect a variety of miniature marine life, from baby shrimp to tiny squid, and build your personal collection of these elusive finds.

**Highlights:** Sift through virtual shirasu, Discover hidden sea creatures, Collect miniature marine life, Build a personal collection, Hint system for assistance, Save game progress

**Features:** macOS Compatibility

**In-app purchases:** none


### 不思議コレクション 大人の図鑑

[App page](https://appshunter.io/ios/app/id6473504959)

Collect replica items from a museum curated by Medjed, covering history, art, science, and nature. Complete your "Adult Encyclopedia" with detailed descriptions of your collected items. This is a completely free game with no in-app purchases.

**Highlights:** Collect replica items, Complete an adult encyclopedia, Museum-themed collection, Detailed item descriptions, Completely free to play

**In-app purchases:** none


## Frequently asked questions

### Is Mysterious Creatures free?

Mysterious Creatures is free to download, with no in-app purchases.

### Is 不思議コレクション 大人の図鑑 free?

不思議コレクション 大人の図鑑 is free to download, with no in-app purchases.

### Which has better reviews, Mysterious Creatures or 不思議コレクション 大人の図鑑?

不思議コレクション 大人の図鑑 is rated higher. Mysterious Creatures averages 3.4 out of 5 from 5 ratings, while 不思議コレクション 大人の図鑑 averages 5.0 from 4 ratings.

### Do Mysterious Creatures or 不思議コレクション 大人の図鑑 have ads?

Both Mysterious Creatures and 不思議コレクション 大人の図鑑 show ads.

### Which is updated more often, Mysterious Creatures or 不思議コレクション 大人の図鑑?

Mysterious Creatures ships an update every 4 months, and 不思議コレクション 大人の図鑑 every 3 months. Most recently, Mysterious Creatures was updated on September 11, 2026 and 不思議コレクション 大人の図鑑 on September 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.*