# RemNum 〜 数字を暗記するだけのアプリ vs Mahjong Memo

The clearest difference is in-app purchases: RemNum 〜 数字を暗記するだけのアプリ at none against Mahjong Memo's 2. RemNum 〜 数字を暗記するだけのアプリ also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.1). Mahjong Memo's advantage is update cadence (weekly vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Mahjong Memo sells 2 in-app purchases, starting at $1.99 per month. RemNum 〜 数字を暗記するだけのアプリ asks for nothing beyond the download.

RemNum 〜 数字を暗記するだけのアプリ ships an update every 3 weeks, Mahjong Memo weekly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RemNum 〜 数字を暗記するだけのアプリ | Mahjong Memo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 48 MB | 69 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yoshitomo ishii](https://appshunter.io/developer/1495140436) | [kohei suzuki](https://appshunter.io/developer/1894188962) |

## What reviewers say

### 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


### Mahjong Memo

[App page](https://appshunter.io/ios/app/mahjong-memo-score-tracker/id6762451575)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Yearly | $19.99 | per year |


## Frequently asked questions

### 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.

### Is Mahjong Memo free?

Mahjong Memo is free to download, with in-app purchases available.

### Do RemNum 〜 数字を暗記するだけのアプリ or Mahjong Memo have ads?

Mahjong Memo shows ads; RemNum 〜 数字を暗記するだけのアプリ does not.

### Which is updated more often, RemNum 〜 数字を暗記するだけのアプリ or Mahjong Memo?

RemNum 〜 数字を暗記するだけのアプリ ships an update every 3 weeks, and Mahjong Memo weekly. Most recently, RemNum 〜 数字を暗記するだけのアプリ was updated on October 21, 2026 and Mahjong Memo on October 24, 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.*