# Train Kit vs AR太空科普

The clearest difference is price: AR太空科普 at Free against Train Kit's $6.99. AR太空科普 also leads on iOS requirement (11.0 vs 15.0). Train Kit's advantage is update cadence (every 5 weeks vs every 7 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

AR太空科普 is free to download; Train Kit costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Train Kit ships an update every 5 weeks, AR太空科普 every 7 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Train Kit | AR太空科普 |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.6 (571 ratings)](https://appshunter.io/ios/app/train-kit-space/id1480714984/reviews)** | — |
| Number of ratings | **571** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 7 months |
| Monetization | Free | — |
| Size | 125 MB | 1.4 GB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Phd Apps LLC](https://appshunter.io/developer/1790286252) | [IF Interactive Limited](https://appshunter.io/developer/883866623) |

## What reviewers say

### Train Kit

[App page](https://appshunter.io/ios/app/train-kit-space/id1480714984)

Build and explore a space train system on different planets. Design intricate tracks, manage resources for survival, and enjoy a first-person train driver view. A creative sandbox for young space explorers.

**Highlights:** Build space rail systems on planets, Explore the solar system, Deep space survival challenges, 3D train driver view, Snap-together track tiles, Create unique trains

**Features:** macOS Compatibility

**In-app purchases:** none


### AR太空科普

[App page](https://appshunter.io/ios/app/ar/id1545073628)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Train Kit free?

Train Kit costs $6.99, with no in-app purchases.

### Is AR太空科普 free?

AR太空科普 is free to download, with no in-app purchases.

### Do Train Kit or AR太空科普 have ads?

Neither Train Kit nor AR太空科普 shows ads.

### Which is updated more often, Train Kit or AR太空科普?

Train Kit ships an update every 5 weeks, and AR太空科普 every 7 months. Most recently, Train Kit was updated on October 13, 2026 and AR太空科普 on October 2, 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.*