# 空想水族館 vs Koinobore

The clearest difference is device support: 空想水族館 at 3 against Koinobore's 1. 空想水族館 also leads on iOS requirement (12.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

空想水族館 ships an update every 2 months, Koinobore every 5 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 空想水族館 | Koinobore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (8 ratings)](https://appshunter.io/ios/app/id6443890302/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 395 MB | 96 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ArtsPlanet](https://appshunter.io/developer/661686993) | [Kentaro Miura](https://appshunter.io/developer/909578100) |

## What reviewers say

### 空想水族館

[App page](https://appshunter.io/ios/app/id6443890302)

Discover a futuristic aquarium filled with whimsical creatures. Collect unique animal hybrids through a free gacha system and uncover the aquarium's secrets in a fun, story-driven game. Enjoy simple, casual gameplay perfect for passing the time.

**Highlights:** Collect unique hybrid creatures, Free gacha system, Futuristic aquarium setting, Story-driven gameplay, Tilt sensor mechanics, Casual time-killing game

**In-app purchases:** none


### Koinobore

[App page](https://appshunter.io/ios/app/koinobore/id6761687212)

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

**In-app purchases:** none


## Frequently asked questions

### Is 空想水族館 free?

空想水族館 is free to download, with no in-app purchases.

### Is Koinobore free?

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

### Do 空想水族館 or Koinobore have ads?

Both 空想水族館 and Koinobore show ads.

### Which is updated more often, 空想水族館 or Koinobore?

空想水族館 ships an update every 2 months, and Koinobore every 5 weeks. Most recently, 空想水族館 was updated on October 27, 2026 and Koinobore on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*