# googolChooChoo3D vs Build A Train 2

The clearest difference is price: googolChooChoo3D at Free against Build A Train 2's $2.99. googolChooChoo3D also leads on update cadence (every 3 months vs every 46 months). Build A Train 2's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating, ratings volume and device support there is nothing between them.

googolChooChoo3D is free to download; Build A Train 2 costs $2.99 up front. googolChooChoo3D sells 1 one-off in-app purchase. Build A Train 2 asks for nothing beyond the download.

Build A Train 2 holds the better App Store score, 3.8 against 3.6. Both are backed by a comparable volume of ratings — 69 and 24 respectively. Written reviews point the same way: 47% of googolChooChoo3D's written reviews are positive against 67% of Build A Train 2's.

googolChooChoo3D ships an update every 3 months, Build A Train 2 every 46 months. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | googolChooChoo3D | Build A Train 2 |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [3.6 (69 ratings)](https://appshunter.io/ios/app/googolchoochoo3d/id642845435/reviews) | **[3.8 (24 ratings)](https://appshunter.io/ios/app/build-a-train-2/id680084979/reviews)** |
| Number of ratings | **69** | 24 |
| Positive reviews | 47.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 46 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 30 MB | 100 MB |
| Requires iOS | 17.6 | **8.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) | [Playtend Apps LLP](https://appshunter.io/developer/320166203) |

## 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 |


### Build A Train 2

[App page](https://appshunter.io/ios/app/build-a-train-2/id680084979)

Design custom trains and build your own maps to drive them on. This sequel allows kids to create unique engines and cars, then explore their creations. Future content updates are included free.

**Highlights:** Customize train engines and cars, 64 color options for trains, Map builder with terrain and track layout, Configure trains with up to 8 cars, Drive trains on custom maps, Unlockable content through gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is googolChooChoo3D free?

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

### Is Build A Train 2 free?

Build A Train 2 costs $2.99, with no in-app purchases.

### Which has better reviews, googolChooChoo3D or Build A Train 2?

Build A Train 2 is rated higher. googolChooChoo3D averages 3.6 out of 5 from 69 ratings, while Build A Train 2 averages 3.8 from 24 ratings.

### Do googolChooChoo3D or Build A Train 2 have ads?

googolChooChoo3D shows ads; Build A Train 2 does not.

### Which is updated more often, googolChooChoo3D or Build A Train 2?

googolChooChoo3D ships an update every 3 months, and Build A Train 2 every 46 months. Most recently, googolChooChoo3D was updated on October 19, 2026 and Build A Train 2 on October 10, 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.*