# Twins vs Aquarium Project

The clearest difference is in-app purchases: Aquarium Project at none against Twins's 7. Aquarium Project also leads on update cadence (every 2 days vs every 3 weeks). Twins's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. Twins sells 7 one-off in-app purchases. Aquarium Project asks for nothing beyond the download.

Twins ships an update every 3 weeks, Aquarium Project every 2 days. The most recent releases landed on November 2, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Twins | Aquarium Project |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (51 ratings)](https://appshunter.io/ios/app/twins/id1144020719/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 72.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 237 MB | 111 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Olivia Ashley](https://appshunter.io/developer/1144020718) | [Takayuki Hakoishi](https://appshunter.io/developer/6799844292) |

## What reviewers say

### Twins

[App page](https://appshunter.io/ios/app/twins/id1144020719)

Navigate endless lanes filled with cubes in this thrilling arcade game. Tap the screen to steer your balls away from obstacles, keeping them in the outer lanes or returning them to the middle. Test your reflexes and aim for a high score.

**Highlights:** Endless lane gameplay, Cube avoidance challenges, Tap-to-steer controls, Four endless lanes, High score chasing

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Revive Tickets | $0.99 | one-time |
| 初回限定オファー | $0.99 | one-time |
| No ad | $1.99 | one-time |
| 10 Revive Tickets | $2.99 | one-time |
| スターターパック | $2.99 | one-time |
| 30 Revive Tickets | $6.99 | one-time |
| Ultimate Starter Pack | $6.99 | one-time |


### Aquarium Project

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

**In-app purchases:** none


## Frequently asked questions

### Is Twins free?

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

### Is Aquarium Project free?

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

### Do Twins or Aquarium Project have ads?

Both Twins and Aquarium Project show ads.

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

Twins ships an update every 3 weeks, and Aquarium Project every 2 days. Most recently, Twins was updated on November 2, 2026 and Aquarium Project on October 29, 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.*