# Citlin vs AI Study Sheet

The clearest difference is in-app purchases: Citlin at none against AI Study Sheet's 1. AI Study Sheet's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. AI Study Sheet sells 1 one-off in-app purchase. Citlin asks for nothing beyond the download.

## The numbers

| Metric | Citlin | AI Study Sheet |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 55 MB | 9 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [nachito fukuda](https://appshunter.io/developer/1795833848) | [Masaki Iino](https://appshunter.io/developer/6778272211) |

## What reviewers say

### Citlin

[App page](https://appshunter.io/ios/app/citlin/id6742269279)

**Features:** macOS Compatibility

**In-app purchases:** none


### AI Study Sheet

[App page](https://appshunter.io/ios/app/ai-study-sheet-flashcards/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 Citlin free?

Citlin is free to download, with no in-app purchases.

### Is AI Study Sheet free?

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

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

Citlin shows ads; AI Study Sheet does not.

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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.*