# Train Digger vs Simple Marble Run

The clearest difference is in-app purchases: Simple Marble Run at none against Train Digger's 12. Simple Marble Run also leads on review sentiment (17% vs 0%). Train Digger's advantage is rating (4.8 vs 4.4) and update cadence (every 2 weeks vs every 6 weeks). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Train Digger sells 12 in-app purchases, starting at $6.99 per 7 days. Simple Marble Run asks for nothing beyond the download.

Train Digger holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 519 and 263 respectively. Written reviews complicate that: 0% of Train Digger's written reviews are positive against 17% of Simple Marble Run's, so the app with the better star average is not the one people write more warmly about.

Train Digger ships an update every 2 weeks, Simple Marble Run every 6 weeks. The most recent releases landed on October 28, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Train Digger | Simple Marble Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (519 ratings)](https://appshunter.io/ios/app/train-digger-idle-game/id6749448411/reviews)** | [4.4 (263 ratings)](https://appshunter.io/ios/app/simple-marble-run/id6751544330/reviews) |
| Number of ratings | **519** | 263 |
| Positive reviews | 0.0% of reviews | **16.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 6 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 349 MB | 193 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sablo Studio](https://appshunter.io/developer/1434408975) | [monois Inc.](https://appshunter.io/developer/498398223) |

## What reviewers say

### Train Digger

[App page](https://appshunter.io/ios/app/train-digger-idle-game/id6749448411)

Control a mining train to dig for resources underground and use them to build and expand a vibrant city. Upgrade your train and unlock new engines to mine deeper and faster. Earn resources even while offline to grow your city at your own pace.

**Highlights:** Dig deep for resources, Build and customize your city, Upgrade trains and mining power, Idle earnings while offline, Satisfying animations

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vip Experience | $6.99 | per 7 days |
| 2x Truck Speed | $0.99 | one-time |
| 3x Earnings Forever | $0.99 | one-time |
| Automate Train Forever | $0.99 | one-time |
| Speed Up | $0.99 | one-time |
| Pack of 10 Gems | $1.99 | one-time |
| Pack of 30 Gems | $3.99 | one-time |
| Pack of 50 Gems | $5.99 | one-time |
| Remove Forced Ads | $9.99 | one-time |
| Remove Ads Pack | $10.99 | one-time |
| Pack of 100 Gems | $11.99 | one-time |
| Pack of 200 Gems | $19.99 | one-time |


### 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 Train Digger free?

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

### Is Simple Marble Run free?

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

### Which has better reviews, Train Digger or Simple Marble Run?

Train Digger is rated higher. Train Digger averages 4.8 out of 5 from 519 ratings, while Simple Marble Run averages 4.4 from 263 ratings.

### Do Train Digger or Simple Marble Run have ads?

Both Train Digger and Simple Marble Run show ads.

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

Train Digger ships an update every 2 weeks, and Simple Marble Run every 6 weeks. Most recently, Train Digger was updated on October 28, 2026 and Simple Marble Run on October 30, 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.*