# Roach Outbreak vs Nishikigoi Pond

The clearest difference is update cadence: Nishikigoi Pond at every 9 days against Roach Outbreak's monthly. Nishikigoi Pond also leads on iOS requirement (17.0 vs 26.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Roach Outbreak ships an update monthly, Nishikigoi Pond every 9 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Roach Outbreak | Nishikigoi Pond |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/nishikigoi-pond/id6789128188/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Ad-supported |
| Size | 64 MB | 9 MB |
| Requires iOS | 26.5 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [kenshin miyamoto](https://appshunter.io/developer/1672328137) | [Kouki Ohta](https://appshunter.io/developer/6786263873) |

## What reviewers say

### Roach Outbreak

[App page](https://appshunter.io/ios/app/roach-outbreak/id6781631413)

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

**In-app purchases:** none


### Nishikigoi Pond

[App page](https://appshunter.io/ios/app/nishikigoi-pond/id6789128188)

Create and nurture a virtual koi pond. Watch unique fish grow, breed them to develop new patterns, and enter them into competitions. This simulation allows you to manage a serene aquatic environment with distinct koi characteristics.

**Highlights:** Unique, procedurally generated koi patterns, Koi growth and color development, Breeding system for new lineages, Discovery of rare 'phantom' koi, Koi show competitions, Daily care and pond management

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

**In-app purchases:** none


## Frequently asked questions

### Is Roach Outbreak free?

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

### Is Nishikigoi Pond free?

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

### Do Roach Outbreak or Nishikigoi Pond have ads?

Both Roach Outbreak and Nishikigoi Pond show ads.

### Which is updated more often, Roach Outbreak or Nishikigoi Pond?

Roach Outbreak ships an update monthly, and Nishikigoi Pond every 9 days. Most recently, Roach Outbreak was updated on October 31, 2026 and Nishikigoi Pond on October 31, 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.*