# Build This vs Rail Sort

Build This and Rail Sort are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly daily. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Build This | Rail Sort |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Daily | Daily |
| Size | 81 MB | 139 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kevin Merz](https://appshunter.io/developer/1642543757) | [3A YAPIM VE YAZILIM DANISMANLIK LIMITED SIRKETI](https://appshunter.io/developer/1493049868) |

## What reviewers say

### Build This

[App page](https://appshunter.io/ios/app/build-this-block-adventure/id6444769304)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rail Sort

[App page](https://appshunter.io/ios/app/rail-sort/id6749228323)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Build This free?

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

### Is Rail Sort free?

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

### Do Build This or Rail Sort have ads?

Both Build This and Rail Sort show ads.

### Which is updated more often, Build This or Rail Sort?

Build This ships an update daily, and Rail Sort daily. Most recently, Build This was updated on October 27, 2026 and Rail Sort on October 28, 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.*