# 赤シートで勉強 楽しく学習 vs Red Sheet

The clearest difference is in-app purchases: 赤シートで勉強 楽しく学習 at none against Red Sheet's 1. 赤シートで勉強 楽しく学習 also leads on update cadence (daily vs every 4 days) and iOS requirement (14.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Red Sheet sells 1 in-app purchase, starting at $2.99 per year. 赤シートで勉強 楽しく学習 asks for nothing beyond the download.

赤シートで勉強 楽しく学習 ships an update daily, Red Sheet every 4 days. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 赤シートで勉強 楽しく学習 | Red Sheet |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Every 4 days |
| Size | 49 MB | 180 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lisfee, Inc.](https://appshunter.io/developer/1146331015) | [N-Verse LLC](https://appshunter.io/developer/1868412567) |

## What reviewers say

### 赤シートで勉強 楽しく学習

[App page](https://appshunter.io/ios/app/ai/id6748378518)

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

**In-app purchases:** none


### 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 赤シートで勉強 楽しく学習 free?

赤シートで勉強 楽しく学習 is free to download, with no in-app purchases.

### Is Red Sheet free?

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

### Do 赤シートで勉強 楽しく学習 or Red Sheet have ads?

Both 赤シートで勉強 楽しく学習 and Red Sheet show ads.

### Which is updated more often, 赤シートで勉強 楽しく学習 or Red Sheet?

赤シートで勉強 楽しく学習 ships an update daily, and Red Sheet every 4 days. Most recently, 赤シートで勉強 楽しく学習 was updated on October 2, 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.*