# Aquarium Project vs NEBULRUSH

The clearest difference is in-app purchases: Aquarium Project at none against NEBULRUSH's 10. NEBULRUSH's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NEBULRUSH sells 10 one-off in-app purchases. Aquarium Project asks for nothing beyond the download.

Aquarium Project ships an update every 2 days, NEBULRUSH every 3 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | Aquarium Project | NEBULRUSH |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 3 days |
| Size | 111 MB | 6 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Takayuki Hakoishi](https://appshunter.io/developer/6799844292) | [Tsubasa Wakida](https://appshunter.io/developer/6800550777) |

## What reviewers say

### Aquarium Project

[App page](https://appshunter.io/ios/app/aquarium-project/id6819497343)

**In-app purchases:** none


### NEBULRUSH

[App page](https://appshunter.io/ios/app/nebulrush/id6823057034)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| エンジニア | $1.99 | one-time |
| レスキュー | $1.99 | one-time |
| パイロット | $1.99 | one-time |
| レンジャー | $1.99 | one-time |
| 星侍 | $1.99 | one-time |
| 電脳忍者 | $1.99 | one-time |
| 星騎士 | $1.99 | one-time |
| コマンダー | $1.99 | one-time |
| 星導士 | $1.99 | one-time |
| 銀河の英雄 | $1.99 | one-time |


## Frequently asked questions

### Is Aquarium Project free?

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

### Is NEBULRUSH free?

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

### Do Aquarium Project or NEBULRUSH have ads?

Both Aquarium Project and NEBULRUSH show ads.

### Which is updated more often, Aquarium Project or NEBULRUSH?

Aquarium Project ships an update every 2 days, and NEBULRUSH every 3 days. Most recently, Aquarium Project was updated on November 6, 2026 and NEBULRUSH on November 6, 2026.

---

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