# 太空小值 vs railia

The clearest difference is iOS requirement: 太空小值 at 11.0 against railia's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

太空小值 ships an update fortnightly, railia every 4 weeks. The most recent releases landed on September 17, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | 太空小值 | railia |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 56 MB | 87 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SHENZHEN WANJIAAN INTERCONNECTED TECHNOLOGY.,LTD.](https://appshunter.io/developer/1546696527) | [Shenzhen Ruilaiya Sales Service Co., Ltd](https://appshunter.io/developer/6787025313) |

## What reviewers say

### 太空小值

[App page](https://appshunter.io/ios/app/id6445976255)

**Features:** macOS Compatibility

**In-app purchases:** none


### railia

[App page](https://appshunter.io/ios/app/railia/id6748338545)

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

**In-app purchases:** none


## Frequently asked questions

### Is 太空小值 free?

太空小值 is free to download, with no in-app purchases.

### Is railia free?

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

### Do 太空小值 or railia have ads?

Neither 太空小值 nor railia shows ads.

### Which is updated more often, 太空小值 or railia?

太空小值 ships an update fortnightly, and railia every 4 weeks. Most recently, 太空小值 was updated on September 17, 2026 and railia on August 31, 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.*