# Voltomat Heating vs Model Train Script

The clearest difference is in-app purchases: Voltomat Heating at none against Model Train Script's 2. Voltomat Heating also leads on iOS requirement (14.0 vs 18.6). Model Train Script's advantage is update cadence (every 3 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. Model Train Script sells 2 one-off in-app purchases. Voltomat Heating asks for nothing beyond the download.

Voltomat Heating ships an update every 7 months, Model Train Script every 3 weeks. The most recent releases landed on September 30, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Voltomat Heating | Model Train Script |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 62 MB | 46 MB |
| Requires iOS | **14.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Home Domotic Developments, S.L.](https://appshunter.io/developer/1481462876) | [Arjan Pragt](https://appshunter.io/developer/1654600131) |

## What reviewers say

### Voltomat Heating

[App page](https://appshunter.io/ios/app/voltomat-heating/id1481462877)

**Features:** macOS Compatibility

**In-app purchases:** none


### Model Train Script

[App page](https://appshunter.io/ios/app/model-train-script/id6444422153)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation for ModelTrainScript | $9.00 | one-time |
| License | $12.99 | one-time |


## Frequently asked questions

### Is Voltomat Heating free?

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

### Is Model Train Script free?

Model Train Script is free to download, with in-app purchases available.

### Do Voltomat Heating or Model Train Script have ads?

Neither Voltomat Heating nor Model Train Script shows ads.

### Which is updated more often, Voltomat Heating or Model Train Script?

Voltomat Heating ships an update every 7 months, and Model Train Script every 3 weeks. Most recently, Voltomat Heating was updated on September 30, 2026 and Model Train Script on October 4, 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.*