# googolChooChoo3D vs Stack Rail

The clearest difference is in-app purchases: Stack Rail at none against googolChooChoo3D's 1. Stack Rail also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 months). On price and device support there is nothing between them.

Both are free to download. googolChooChoo3D sells 1 one-off in-app purchase. Stack Rail asks for nothing beyond the download.

googolChooChoo3D ships an update every 3 months, Stack Rail every 4 days. The most recent releases landed on September 8, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | googolChooChoo3D | Stack Rail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (69 ratings)](https://appshunter.io/ios/app/googolchoochoo3d/id642845435/reviews)** | — |
| Number of ratings | **69** | — |
| Positive reviews | 47.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 104 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) | [Seher Anwar](https://appshunter.io/developer/1322493633) |

## What reviewers say

### googolChooChoo3D

[App page](https://appshunter.io/ios/app/googolchoochoo3d/id642845435)

Create and explore 3D model railroad layouts with ease. Design your own tracks and scenery by dragging and dropping elements. Experience your creations from various viewpoints, including the driver's seat of a moving train.

**Highlights:** 3D model railroad simulation, Drag-and-drop layout creation, Customizable track and item placement, Multiple camera views, Driver's seat perspective, Scenery design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Stack Rail

[App page](https://appshunter.io/ios/app/stack-rail-save-the-train/id1546846513)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is googolChooChoo3D free?

googolChooChoo3D is free to download, with in-app purchases available.

### Is Stack Rail free?

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

### Do googolChooChoo3D or Stack Rail have ads?

googolChooChoo3D shows ads; Stack Rail does not.

### Which is updated more often, googolChooChoo3D or Stack Rail?

googolChooChoo3D ships an update every 3 months, and Stack Rail every 4 days. Most recently, googolChooChoo3D was updated on September 8, 2026 and Stack Rail on September 24, 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.*