# Space Twins vs Mustard Box Master

The clearest difference is in-app purchases: Mustard Box Master at none against Space Twins's 3. Space Twins's advantage is ads (none vs shown) and update cadence (every 17 months vs every 43 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Space Twins sells 3 one-off in-app purchases. Mustard Box Master asks for nothing beyond the download.

Space Twins ships an update every 17 months, Mustard Box Master every 43 months. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Space Twins | Mustard Box Master |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 17 months** | Every 43 months |
| Monetization | Free with in-app purchases | — |
| Size | 78 MB | 195 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Frimus](https://appshunter.io/developer/673071528) | [Quoc An Nguyen](https://appshunter.io/developer/1135969360) |

## What reviewers say

### Space Twins

[App page](https://appshunter.io/ios/app/space-twins/id972964669)

Guide two characters through an endless space journey, dodging obstacles and collecting fuel. Unlock various avatars and challenge friends in different game modes. Enjoy funky music and practice your skills.

**Highlights:** Endless gameplay, Avatar collection, Practice mode, Easy and Hard modes, Compete with friends, Earn stars by watching videos

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star Pack 1 | $0.99 | one-time |
| Star Pack 2 | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |


### Mustard Box Master

[App page](https://appshunter.io/ios/app/mustard-box-master/id1619120961)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Space Twins free?

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

### Is Mustard Box Master free?

Mustard Box Master is free to download, with no in-app purchases.

### Do Space Twins or Mustard Box Master have ads?

Mustard Box Master shows ads; Space Twins does not.

### Which is updated more often, Space Twins or Mustard Box Master?

Space Twins ships an update every 17 months, and Mustard Box Master every 43 months. Most recently, Space Twins was updated on October 7, 2026 and Mustard Box Master on October 17, 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.*