# Memory Space 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 Memory Space'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 95 months) and device support (3 vs 1). On price 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.

Memory Space ships an update every 95 months, RemNum 〜 数字を暗記するだけのアプリ every 3 weeks. The most recent releases landed on October 29, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Memory Space | RemNum 〜 数字を暗記するだけのアプリ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 95 months | **Every 3 weeks** |
| Size | 4 MB | 48 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JunJie Yang](https://appshunter.io/developer/1442087099) | [yoshitomo ishii](https://appshunter.io/developer/1495140436) |

## What reviewers say

### Memory Space

[App page](https://appshunter.io/ios/app/memory-space-memory-challenge/id1442087100)

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

**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 Memory Space free?

Memory Space 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 Memory Space or RemNum 〜 数字を暗記するだけのアプリ have ads?

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

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

Memory Space ships an update every 95 months, and RemNum 〜 数字を暗記するだけのアプリ every 3 weeks. Most recently, Memory Space was updated on October 29, 2026 and RemNum 〜 数字を暗記するだけのアプリ on November 4, 2026.

---

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