# FlashNumbers：Train your memory vs RemNum 〜 数字を暗記するだけのアプリ

The clearest difference is ads: RemNum 〜 数字を暗記するだけのアプリ at none against FlashNumbers：Train your memory's shown. RemNum 〜 数字を暗記するだけのアプリ also leads on update cadence (every 3 weeks vs every 17 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

FlashNumbers：Train your memory ships an update every 17 months, RemNum 〜 数字を暗記するだけのアプリ every 3 weeks. The most recent releases landed on September 9, 2026 and May 14, 2026 respectively.

## The numbers

| Metric | FlashNumbers：Train your memory | RemNum 〜 数字を暗記するだけのアプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flashnumberstrain-your-memory/id1165941421/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 17 months | **Every 3 weeks** |
| Monetization | Ad-supported | — |
| Size | 52 MB | 48 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jun Koizumi](https://appshunter.io/developer/1143108654) | [yoshitomo ishii](https://appshunter.io/developer/1495140436) |

## What reviewers say

### 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


### RemNum 〜 数字を暗記するだけのアプリ

[App page](https://appshunter.io/ios/app/remnum/id6504561429)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FlashNumbers：Train your memory free?

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

### Is RemNum 〜 数字を暗記するだけのアプリ free?

RemNum 〜 数字を暗記するだけのアプリ is free to download, with no in-app purchases.

### Do FlashNumbers：Train your memory or RemNum 〜 数字を暗記するだけのアプリ have ads?

FlashNumbers：Train your memory shows ads; RemNum 〜 数字を暗記するだけのアプリ does not.

### Which is updated more often, FlashNumbers：Train your memory or RemNum 〜 数字を暗記するだけのアプリ?

FlashNumbers：Train your memory ships an update every 17 months, and RemNum 〜 数字を暗記するだけのアプリ every 3 weeks. Most recently, FlashNumbers：Train your memory was updated on September 9, 2026 and RemNum 〜 数字を暗記するだけのアプリ on May 14, 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.*