# googolChooChoo3D2 vs Simple Marble Run

The clearest difference is review sentiment: googolChooChoo3D2 at 77% against Simple Marble Run's 0%. googolChooChoo3D2 also leads on iOS requirement (12.0 vs 15.0). Simple Marble Run's advantage is rating (4.4 vs 4.0) and ratings volume (238 vs 34). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Simple Marble Run holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Simple Marble Run has 238 ratings behind it against 34, so its average is the more settled of the two. Written reviews complicate that: 77% of googolChooChoo3D2's written reviews are positive against 0% of Simple Marble Run's, so the app with the better star average is not the one people write more warmly about.

googolChooChoo3D2 ships an update monthly, Simple Marble Run every 6 weeks. The most recent releases landed on September 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | googolChooChoo3D2 | Simple Marble Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (34 ratings)](https://appshunter.io/ios/app/googolchoochoo3d2/id1223923252/reviews) | **[4.4 (238 ratings)](https://appshunter.io/ios/app/simple-marble-run/id6751544330/reviews)** |
| Number of ratings | 34 | **238** |
| Positive reviews | **76.9% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Ad-supported | Ad-supported |
| Size | 39 MB | 193 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kouichi Hayashi](https://appshunter.io/developer/1809037541) | [monois Inc.](https://appshunter.io/developer/498398223) |

## What reviewers say

### 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


### Simple Marble Run

[App page](https://appshunter.io/ios/app/simple-marble-run/id6751544330)

Experience a calming marble game with customizable courses. Manipulate the flow with stoppers, pins, and throwing mechanics. Watch marbles collect and depart in a delightful cycle, offering a unique ASMR-like experience.

**Highlights:** Customizable marble courses, Interactive marble manipulation (stoppers, pins), Marble throwing mechanic, Truck collection and departure cycle, Adjustable camera viewpoints, Soothing ASMR-like experience

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

**In-app purchases:** none


## Frequently asked questions

### Is googolChooChoo3D2 free?

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

### Is Simple Marble Run free?

Simple Marble Run is free to download, with no in-app purchases.

### Which has better reviews, googolChooChoo3D2 or Simple Marble Run?

Simple Marble Run is rated higher. googolChooChoo3D2 averages 4.0 out of 5 from 34 ratings, while Simple Marble Run averages 4.4 from 238 ratings.

### Do googolChooChoo3D2 or Simple Marble Run have ads?

Both googolChooChoo3D2 and Simple Marble Run show ads.

### Which is updated more often, googolChooChoo3D2 or Simple Marble Run?

googolChooChoo3D2 ships an update monthly, and Simple Marble Run every 6 weeks. Most recently, googolChooChoo3D2 was updated on September 8, 2026 and Simple Marble Run on September 25, 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.*