# Red Sheet vs AI Study Sheet

The clearest difference is ads: AI Study Sheet at none against Red Sheet's shown. AI Study Sheet also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, in-app purchases 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 and AI Study Sheet sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Red Sheet ships an update every 4 days, AI Study Sheet every 3 days. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Red Sheet | AI Study Sheet |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 180 MB | 8 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [N-Verse LLC](https://appshunter.io/developer/1868412567) | [Masaki Iino](https://appshunter.io/developer/6778272211) |

## What reviewers say

### 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 |


### AI Study Sheet

[App page](https://appshunter.io/ios/app/ai-study-sheet-active-recall/id6782023263)

Transform existing study materials into active-recall quizzes with AI. Snap photos or import PDFs, and the app automatically masks key terms for spaced repetition. Review materials with an auto-reveal mode that adapts to your learning behavior.

**Highlights:** Import photos and PDFs, Automatic AI masking of key terms, Review reminders, Auto Study Mode with sequential reveal, Adaptive learning based on study behavior, Organized study material library, Flexible material viewing and editing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Saves | $4.99 | one-time |


## Frequently asked questions

### Is Red Sheet free?

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

### Is AI Study Sheet free?

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

### Do Red Sheet or AI Study Sheet have ads?

Red Sheet shows ads; AI Study Sheet does not.

### Which is updated more often, Red Sheet or AI Study Sheet?

Red Sheet ships an update every 4 days, and AI Study Sheet every 3 days. Most recently, Red Sheet was updated on October 5, 2026 and AI Study Sheet on October 15, 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.*