# 赤シート暗記アプリ vs Red Sheet

The clearest difference is ads: 赤シート暗記アプリ at none against Red Sheet's shown. 赤シート暗記アプリ also leads on iOS requirement (13.0 vs 18.0). Red Sheet's advantage is update cadence (every 4 days vs every 16 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 赤シート暗記アプリ sells 4 in-app purchases, starting at $0.99 per month and Red Sheet sells 1 in-app purchase, starting at $2.99 per year. Whichever you choose, the download price is not the number that matters.

赤シート暗記アプリ ships an update every 16 months, Red Sheet every 4 days. The most recent releases landed on October 7, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 赤シート暗記アプリ | Red Sheet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 16 months | **Every 4 days** |
| Size | 26 MB | 180 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [kotobaz](https://appshunter.io/developer/1634727152) | [N-Verse LLC](https://appshunter.io/developer/1868412567) |

## What reviewers say

### 赤シート暗記アプリ

[App page](https://appshunter.io/ios/app/pdf-akashi/id6468978321)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム月額プラン | $0.99 | per month |
| プレミアム3ヶ月プラン | $2.99 | per 3 months |
| プレミアム 6ヶ月プラン | $5.99 | per 6 months |
| PDF機能 | $0.99 | one-time |


### Red Sheet

[App page](https://appshunter.io/ios/app/red-sheet-kun-ai-study-sheets/id6775183078)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Red Sheet-kun Premium Annual | $2.99 | per year |


## Frequently asked questions

### Is 赤シート暗記アプリ free?

赤シート暗記アプリ is free to download, with in-app purchases available.

### Is Red Sheet free?

Red Sheet is free to download, with in-app purchases available.

### Do 赤シート暗記アプリ or Red Sheet have ads?

Red Sheet shows ads; 赤シート暗記アプリ does not.

### Which is updated more often, 赤シート暗記アプリ or Red Sheet?

赤シート暗記アプリ ships an update every 16 months, and Red Sheet every 4 days. Most recently, 赤シート暗記アプリ was updated on October 7, 2026 and Red Sheet on October 5, 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.*