# Space Twins vs Jump on Stack

The clearest difference is review sentiment: Space Twins at 100% against Jump on Stack's 88%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Space Twins sells 3 one-off in-app purchases and Jump on Stack sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Space Twins ships an update every 17 months, Jump on Stack every 18 months. The most recent releases landed on October 7, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Space Twins | Jump on Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (208 ratings)](https://appshunter.io/ios/app/jump-on-stack/id1121185635/reviews)** |
| Number of ratings | — | **208** |
| Positive reviews | **100.0% of reviews** | 87.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 17 months** | Every 18 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 78 MB | 150 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Frimus](https://appshunter.io/developer/673071528) | [Appidea](https://appshunter.io/developer/995922286) |

## 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 |


### Jump on Stack

[App page](https://appshunter.io/ios/app/jump-on-stack/id1121185635)

Test your reflexes by tapping to jump on ascending blocks. Hold to jump higher and strategically avoid obstacles. Collect coins to unlock new characters and aim for the highest score.

**Highlights:** Tap to jump, Hold for higher jump, Jump on blue blocks, Avoid red blocks, Collect coins, Unlock new characters

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is Space Twins free?

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

### Is Jump on Stack free?

Jump on Stack is free to download, with in-app purchases available.

### Do Space Twins or Jump on Stack have ads?

Neither Space Twins nor Jump on Stack shows ads.

### Which is updated more often, Space Twins or Jump on Stack?

Space Twins ships an update every 17 months, and Jump on Stack every 18 months. Most recently, Space Twins was updated on October 7, 2026 and Jump on Stack on October 10, 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.*