# Kids Train Sim vs googolChooChoo3D2

The clearest difference is price: googolChooChoo3D2 at Free against Kids Train Sim's $1.99. googolChooChoo3D2 also leads on update cadence (monthly vs every 7 months). Kids Train Sim's advantage is ads (none vs shown) and rating (4.4 vs 4.0). On ratings volume, in-app purchases and device support there is nothing between them.

googolChooChoo3D2 is free to download; Kids Train Sim costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kids Train Sim holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 39 and 35 respectively. Written reviews point the same way: 87% of Kids Train Sim's written reviews are positive against 77% of googolChooChoo3D2's.

Kids Train Sim ships an update every 7 months, googolChooChoo3D2 monthly. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Kids Train Sim | googolChooChoo3D2 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.4 (39 ratings)](https://appshunter.io/ios/app/kids-train-sim/id880674626/reviews)** | [4.0 (35 ratings)](https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252/reviews) |
| Number of ratings | **39** | 35 |
| Positive reviews | **86.7% of reviews** | 76.9% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Paid | **Ad-supported** |
| Best chart rank | **#171** | — |
| Size | 132 MB | 34 MB |
| Requires iOS | **11.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [1788918 Alberta Ltd](https://appshunter.io/developer/597315953) | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) |

## What reviewers say

### Kids Train Sim

[App page](https://appshunter.io/ios/app/kids-train-sim/id880674626)

**Currently charting:** #171 Top Paid · Family (US App Store)

Explore a world of trains with this engaging simulator designed for young children. Drive various train types, manage speed and signals, and even create custom environments with towns and stations.

**Highlights:** Drive 20 train types, Play in 6 pre-made scenes, Build custom environments, Control speed and signals, Switch between train types, Drop off passengers

**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 Kids Train Sim free?

Kids Train Sim costs $1.99, with no in-app purchases.

### Is googolChooChoo3D2 free?

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

### Which has better reviews, Kids Train Sim or googolChooChoo3D2?

Kids Train Sim is rated higher. Kids Train Sim averages 4.4 out of 5 from 39 ratings, while googolChooChoo3D2 averages 4.0 from 35 ratings.

### Do Kids Train Sim or googolChooChoo3D2 have ads?

googolChooChoo3D2 shows ads; Kids Train Sim does not.

### Which is updated more often, Kids Train Sim or googolChooChoo3D2?

Kids Train Sim ships an update every 7 months, and googolChooChoo3D2 monthly. Most recently, Kids Train Sim was updated on November 1, 2026 and googolChooChoo3D2 on October 29, 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.*