# Rail Model Track Calc vs Quick Shot eForm

The clearest difference is ads: Quick Shot eForm at none against Rail Model Track Calc's shown. Quick Shot eForm also leads on update cadence (every 11 days vs every 18 months). Rail Model Track Calc's advantage is iOS requirement (15.4 vs 26.5). On price, 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, Quick Shot eForm every 11 days. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rail Model Track Calc | Quick Shot eForm |
| --- | --- | --- |
| 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 11 days** |
| Monetization | Ad-supported | — |
| Size | 9 MB | 13 MB |
| Requires iOS | **15.4** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nobuyuki Kumakura](https://appshunter.io/developer/1529070760) | [Brad Smith](https://appshunter.io/developer/6780609071) |

## 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


### Quick Shot eForm

[App page](https://appshunter.io/ios/app/quick-shot-eform/id6780609069)

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

**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 Quick Shot eForm free?

Quick Shot eForm is free to download, with no in-app purchases.

### Do Rail Model Track Calc or Quick Shot eForm have ads?

Rail Model Track Calc shows ads; Quick Shot eForm does not.

### Which is updated more often, Rail Model Track Calc or Quick Shot eForm?

Rail Model Track Calc ships an update every 18 months, and Quick Shot eForm every 11 days. Most recently, Rail Model Track Calc was updated on October 6, 2026 and Quick Shot eForm on October 14, 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.*