# 地頭力診断 vs FlashNumbers：Train your memory

The clearest difference is ads: 地頭力診断 at none against FlashNumbers：Train your memory's shown. 地頭力診断 also leads on update cadence (monthly vs every 17 months) and review sentiment (45% vs 33%). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for 地頭力診断 against 5.0 for FlashNumbers：Train your memory. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews are what separate them: 45% of 地頭力診断's written reviews are positive against 33% of FlashNumbers：Train your memory's.

地頭力診断 ships an update monthly, FlashNumbers：Train your memory every 17 months. The most recent releases landed on September 2, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 地頭力診断 | FlashNumbers：Train your memory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/id570172036/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/flashnumberstrain-your-memory/id1165941421/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **45.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 17 months |
| Monetization | — | Ad-supported |
| Size | 44 MB | 52 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vi-King co.,ltd](https://appshunter.io/developer/432738652) | [Jun Koizumi](https://appshunter.io/developer/1143108654) |

## What reviewers say

### 地頭力診断

[App page](https://appshunter.io/ios/app/id570172036)

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

**In-app purchases:** none


### FlashNumbers：Train your memory

[App page](https://appshunter.io/ios/app/flashnumberstrain-your-memory/id1165941421)

This game challenges your visual acuity and memory by having you memorize and input numbers shown briefly on screen. Progress through increasing difficulty levels and track your daily improvements with graphs. Share your high scores on social media.

**Highlights:** Memorize and input numbers, Dynamic visual acuity training, Multiple difficulty levels, Daily improvement graphs, Tutorial for beginners, Share results to SNS

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 地頭力診断 free?

地頭力診断 is free to download, with no in-app purchases.

### Is FlashNumbers：Train your memory free?

FlashNumbers：Train your memory is free to download, with no in-app purchases.

### Which has better reviews, 地頭力診断 or FlashNumbers：Train your memory?

地頭力診断 and FlashNumbers：Train your memory are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 地頭力診断 or FlashNumbers：Train your memory have ads?

FlashNumbers：Train your memory shows ads; 地頭力診断 does not.

### Which is updated more often, 地頭力診断 or FlashNumbers：Train your memory?

地頭力診断 ships an update monthly, and FlashNumbers：Train your memory every 17 months. Most recently, 地頭力診断 was updated on September 2, 2026 and FlashNumbers：Train your memory on September 9, 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.*