# Train + vs Rosie's Riddle

The clearest difference is in-app purchases: Train + at none against Rosie's Riddle's 1. Train + also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Rosie's Riddle sells 1 one-off in-app purchase. Train + asks for nothing beyond the download.

Train + ships an update every 4 months, Rosie's Riddle every 3 months. The most recent releases landed on October 7, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Train + | Rosie's Riddle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Size | 1 MB | 9 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marton Varga](https://appshunter.io/developer/1462579601) | [Robert Heracles](https://appshunter.io/developer/905255640) |

## What reviewers say

### Train +

[App page](https://appshunter.io/ios/app/train-plus-math-practice/id1556128831)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rosie's Riddle

[App page](https://appshunter.io/ios/app/rosies-riddle/id6459582411)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contribution | $0.99 | one-time |


## Frequently asked questions

### Is Train + free?

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

### Is Rosie's Riddle free?

Rosie's Riddle is free to download, with in-app purchases available.

### Do Train + or Rosie's Riddle have ads?

Neither Train + nor Rosie's Riddle shows ads.

### Which is updated more often, Train + or Rosie's Riddle?

Train + ships an update every 4 months, and Rosie's Riddle every 3 months. Most recently, Train + was updated on October 7, 2026 and Rosie's Riddle on October 11, 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.*