# Which hand ?? vs Train the Brain

The clearest difference is rating: Train the Brain at 4.6 against Which hand ??'s 2.8. Train the Brain also leads on ratings volume (122 vs 4). Which hand ??'s advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 9 months). On price, ads and device support there is nothing between them.

Both are free to download. Train the Brain sells 1 one-off in-app purchase. Which hand ?? asks for nothing beyond the download.

Train the Brain holds the better App Store score, 4.6 against 2.8. That said, the two scores are not equally well evidenced: Train the Brain has 122 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 67% of Which hand ??'s written reviews are positive against 57% of Train the Brain's, so the app with the better star average is not the one people write more warmly about.

Which hand ?? ships an update fortnightly, Train the Brain every 9 months. The most recent releases landed on September 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Which hand ?? | Train the Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/which-hand/id1437518328/reviews) | **[4.6 (122 ratings)](https://appshunter.io/ios/app/train-the-brain-coordination/id1468451071/reviews)** |
| Number of ratings | 4 | **122** |
| Positive reviews | **66.7% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 9 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 26 MB | 100 MB |
| Requires iOS | **11.4** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tomohiro Yamashita](https://appshunter.io/developer/658724298) | [Tellmewow](https://appshunter.io/developer/1373142956) |

## What reviewers say

### Which hand ??

[App page](https://appshunter.io/ios/app/which-hand/id1437518328)

A simple game designed to test your reaction time and cognitive skills. Players must quickly select the correct hand shown on the screen. It's a straightforward challenge for quick thinking.

**Highlights:** Quick reaction test, Hand selection gameplay, Brain training challenge, Simple interface

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

**In-app purchases:** none


### Train the Brain

[App page](https://appshunter.io/ios/app/train-the-brain-coordination/id1468451071)

Engaging coordination games designed to enhance hand-eye movement and cognitive skills for all ages. This collection offers fun exercises to stimulate the mind, improve visual perception, and psychomotor abilities through an intuitive interface.

**Highlights:** Hand-eye coordination development, Bimanual coordination exercises, Maze solving with gyroscope, Visual perception enhancement, Psychomotor skill improvement, Attention and processing speed training, Multi-language support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Which hand ?? free?

Which hand ?? is free to download, with no in-app purchases.

### Is Train the Brain free?

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

### Which has better reviews, Which hand ?? or Train the Brain?

Train the Brain is rated higher. Which hand ?? averages 2.8 out of 5 from 4 ratings, while Train the Brain averages 4.6 from 122 ratings.

### Do Which hand ?? or Train the Brain have ads?

Neither Which hand ?? nor Train the Brain shows ads.

### Which is updated more often, Which hand ?? or Train the Brain?

Which hand ?? ships an update fortnightly, and Train the Brain every 9 months. Most recently, Which hand ?? was updated on September 25, 2026 and Train the Brain on October 6, 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.*