# Rail Model Track Calc vs convrt

The clearest difference is ads: convrt at none against Rail Model Track Calc's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

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

Rail Model Track Calc ships an update every 18 months, convrt every 25 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Rail Model Track Calc | convrt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/rail-model-track-calc/id1529070758/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 18 months** | Every 25 months |
| Monetization | Ad-supported | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **15.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nobuyuki Kumakura](https://appshunter.io/developer/1529070760) | [Herbert Jonkman](https://appshunter.io/developer/1544763369) |

## What reviewers say

### Rail Model Track Calc

[App page](https://appshunter.io/ios/app/rail-model-track-calc/id1529070758)

Easily calculate horizontal and vertical dimensions for diagonal railroad model track layouts. Input track length and angle to get precise measurements for combining different track pieces. Avoid guesswork and ensure accurate model railway construction.

**Highlights:** Calculate horizontal and vertical track lengths, Input track length and angle, Precise measurements in 0.5 mm increments, Error margin less than 0.5mm, Reset function for calculations, Designed for railroad modeling hobbyists

**Features:** macOS Compatibility

**In-app purchases:** none


### convrt

[App page](https://appshunter.io/ios/app/convrt-it/id1544763367)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rail Model Track Calc free?

Rail Model Track Calc is free to download, with no in-app purchases.

### Is convrt free?

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

### Do Rail Model Track Calc or convrt have ads?

Rail Model Track Calc shows ads; convrt does not.

### Which is updated more often, Rail Model Track Calc or convrt?

Rail Model Track Calc ships an update every 18 months, and convrt every 25 months. Most recently, Rail Model Track Calc was updated on October 6, 2026 and convrt 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.*