# Robot Trains vs MerchClass

The clearest difference is in-app purchases: MerchClass at none against Robot Trains's 1. MerchClass also leads on ads (none vs shown) and update cadence (fortnightly vs every 45 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Robot Trains sells 1 one-off in-app purchase. MerchClass asks for nothing beyond the download.

Robot Trains ships an update every 45 months, MerchClass fortnightly. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Robot Trains | MerchClass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.7 (6 ratings)](https://appshunter.io/ios/app/robot-trains/id1535163345/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 45 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 205 MB | 118 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tap Tap Tales, SL](https://appshunter.io/developer/953158919) | [SKROLL TU MARS, OOO](https://appshunter.io/developer/1498171787) |

## What reviewers say

### Robot Trains

[App page](https://appshunter.io/ios/app/robot-trains/id1535163345)

Embark on an adventure to save Railworld from a snowstorm by solving over 20 interactive games. Collect energy balls across different worlds to power a rocket and defeat the storm. This app strengthens cognitive skills and is designed for young learners.

**Highlights:** Over 20 interactive mini-games, Strengthens cognitive functions, Reward-based learning system, Approved by pre-school specialists, Available in 7 languages, Interactive learning with visual support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all | $2.99 | one-time |


### MerchClass

[App page](https://appshunter.io/ios/app/merchclass/id1594729431)

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

**In-app purchases:** none


## Frequently asked questions

### Is Robot Trains free?

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

### Is MerchClass free?

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

### Do Robot Trains or MerchClass have ads?

Robot Trains shows ads; MerchClass does not.

### Which is updated more often, Robot Trains or MerchClass?

Robot Trains ships an update every 45 months, and MerchClass fortnightly. Most recently, Robot Trains was updated on October 5, 2026 and MerchClass on October 3, 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.*