# Build A Train 2 vs googolChooChoo3D2

The clearest difference is price: googolChooChoo3D2 at Free against Build A Train 2's $2.99. googolChooChoo3D2 also leads on update cadence (monthly vs every 46 months) and rating (4.0 vs 3.8). Build A Train 2's advantage is ads (none vs shown) and chart position (#200 vs unranked). On ratings volume, in-app purchases and device support there is nothing between them.

googolChooChoo3D2 is free to download; Build A Train 2 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

googolChooChoo3D2 holds the better App Store score, 4.0 against 3.8. Both are backed by a comparable volume of ratings — 24 and 34 respectively. Written reviews point the same way: 67% of Build A Train 2's written reviews are positive against 77% of googolChooChoo3D2's.

Build A Train 2 ships an update every 46 months, googolChooChoo3D2 monthly. The most recent releases landed on September 23, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Build A Train 2 | googolChooChoo3D2 |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.8 (24 ratings)](https://appshunter.io/ios/app/build-a-train-2/id680084979/reviews) | **[4.0 (34 ratings)](https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252/reviews)** |
| Number of ratings | 24 | **34** |
| Positive reviews | 66.7% of reviews | **76.9% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 46 months | **Monthly** |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#200** | — |
| Size | 100 MB | 39 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Playtend Apps LLP](https://appshunter.io/developer/320166203) | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) |

## What reviewers say

### Build A Train 2

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

**Currently charting:** #200 Top Paid · Family (US App Store)

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


### googolChooChoo3D2

[App page](https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252)

Design and build your own 3D model railroad layouts with customizable tracks, structures, and terrain. Experience your creations from various viewpoints, including the driver's seat of a running train.

**Highlights:** 3D model railroad simulation, Customizable track and structure placement, Terrain creation and editing, Multiple viewing perspectives, Automatic tunnel generation, Driver's seat view

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

**In-app purchases:** none


## Frequently asked questions

### Is Build A Train 2 free?

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

### Is googolChooChoo3D2 free?

googolChooChoo3D2 is free to download, with no in-app purchases.

### Which has better reviews, Build A Train 2 or googolChooChoo3D2?

googolChooChoo3D2 is rated higher. Build A Train 2 averages 3.8 out of 5 from 24 ratings, while googolChooChoo3D2 averages 4.0 from 34 ratings.

### Do Build A Train 2 or googolChooChoo3D2 have ads?

googolChooChoo3D2 shows ads; Build A Train 2 does not.

### Which is updated more often, Build A Train 2 or googolChooChoo3D2?

Build A Train 2 ships an update every 46 months, and googolChooChoo3D2 monthly. Most recently, Build A Train 2 was updated on September 23, 2026 and googolChooChoo3D2 on September 8, 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.*