# Metryx vs RailControl Unit

The clearest difference is price: RailControl Unit at Free against Metryx's $0.99. Metryx's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

RailControl Unit is free to download; Metryx costs $0.99 up front. RailControl Unit sells 1 one-off in-app purchase. Metryx asks for nothing beyond the download.

## The numbers

| Metric | Metryx | RailControl Unit |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 1 MB | 5 MB |
| Requires iOS | **17.6** | 18.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FLEMMING THOR HANSEN](https://appshunter.io/developer/1853199902) | [Boterham](https://appshunter.io/developer/552486731) |

## What reviewers say

### Metryx

[App page](https://appshunter.io/ios/app/metryx/id6755325934)

**Features:** macOS Compatibility

**In-app purchases:** none


### RailControl Unit

[App page](https://appshunter.io/ios/app/railcontrol-unit/id6755979312)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Modules | $2.99 | one-time |


## Frequently asked questions

### Is Metryx free?

Metryx costs $0.99, with no in-app purchases.

### Is RailControl Unit free?

RailControl Unit is free to download, with in-app purchases available.

### Do Metryx or RailControl Unit have ads?

Neither Metryx nor RailControl Unit shows ads.

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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.*