# Which hand ?? vs Number and word memory trainer

The clearest difference is review sentiment: Which hand ?? at 83% against Number and word memory trainer's 0%. Which hand ?? also leads on in-app purchases (none vs 1) and iOS requirement (11.4 vs 17.5). Number and word memory trainer's advantage is rating (3.8 vs 2.8). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Number and word memory trainer sells 1 one-off in-app purchase. Which hand ?? asks for nothing beyond the download.

Number and word memory trainer holds the better App Store score, 3.8 against 2.8. Both are backed by a comparable volume of ratings — 4 and 4 respectively. Written reviews complicate that: 83% of Which hand ??'s written reviews are positive against 0% of Number and word memory trainer's, so the app with the better star average is not the one people write more warmly about.

Which hand ?? ships an update fortnightly, Number and word memory trainer every 9 days. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Which hand ?? | Number and word memory trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (4 ratings)](https://appshunter.io/ios/app/which-hand/id1437518328/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/number-and-word-memory-trainer/id1566758991/reviews)** |
| Number of ratings | 4 | 4 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | **Free** | Ad-supported |
| Size | 26 MB | 13 MB |
| Requires iOS | **11.4** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tomohiro Yamashita](https://appshunter.io/developer/658724298) | [Buildandteach Media, LLC](https://appshunter.io/developer/1484708044) |

## 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


### Number and word memory trainer

[App page](https://appshunter.io/ios/app/number-and-word-memory-trainer/id1566758991)

This app helps you improve your memory and focus through number memorization challenges. It offers dynamic difficulty, progress tracking, and a sleek design for effective cognitive training.

**Highlights:** Memorize and recall number sequences, Sequences from 3 to 150 digits, Dynamic difficulty adjustment, Progress tracking, Intuitive design, Cognitive agility training

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $1.99 | one-time |


## Frequently asked questions

### Is Which hand ?? free?

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

### Is Number and word memory trainer free?

Number and word memory trainer is free to download, with in-app purchases available.

### Which has better reviews, Which hand ?? or Number and word memory trainer?

Number and word memory trainer is rated higher. Which hand ?? averages 2.8 out of 5 from 4 ratings, while Number and word memory trainer averages 3.8 from 4 ratings.

### Do Which hand ?? or Number and word memory trainer have ads?

Neither Which hand ?? nor Number and word memory trainer shows ads.

### Which is updated more often, Which hand ?? or Number and word memory trainer?

Which hand ?? ships an update fortnightly, and Number and word memory trainer every 9 days. Most recently, Which hand ?? was updated on November 2, 2026 and Number and word memory trainer on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*