# Hazelnote vs Kluuu

The clearest difference is ads: Hazelnote at none against Kluuu's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Hazelnote sells 4 in-app purchases, starting at $4.99 per 7 days and Kluuu sells 6 in-app purchases, starting at $9.00 per 7 days. Whichever you choose, the download price is not the number that matters.

Hazelnote ships an update every 5 days, Kluuu every 4 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Hazelnote | Kluuu |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 92.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | — | Freemium |
| Size | 79 MB | 86 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Horize](https://appshunter.io/developer/1797319015) | [S + B Labs UG (haftungsbeschrankt)](https://appshunter.io/developer/6786243804) |

## What reviewers say

### Hazelnote

[App page](https://appshunter.io/ios/app/hazelnote-ai-study-notes/id6757763746)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hazelnote Weekly | $4.99 | per 7 days |
| Hazelnote Monthly | $9.99 | per month |
| Hazelnote Annual | $49.99 | per year |
| Hazelnote Annual | $49.99 | per year |


### Kluuu

[App page](https://appshunter.io/ios/app/kluuu-1-ki-quiz-lernapp/id6786243802)

Transform your study materials into interactive quizzes with AI. This app uses active recall to help you learn effectively, making studying feel like a game. Track your progress and prepare for exams with personalized quizzes.

**Highlights:** AI-generated quizzes from study material, Active recall learning method, Progress tracking and streaks, Save and tag quizzes by subject, Exam calendar, Personalized content from user uploads

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kluuu Pro (Weekly) | $9.00 | per 7 days |
| KLUUU Pro (Weekly) | $10.00 | per 7 days |
| Kluuu Pro (Monthly) | $17.00 | per month |
| Kluuu Pro (Monthly) | $29.00 | per month |
| Kluuu Pro (Jährlich) | $45.00 | per year |
| KLUUU Pro (Annual) | $45.00 | per year |


## Frequently asked questions

### Is Hazelnote free?

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

### Is Kluuu free?

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

### Do Hazelnote or Kluuu have ads?

Kluuu shows ads; Hazelnote does not.

### Which is updated more often, Hazelnote or Kluuu?

Hazelnote ships an update every 5 days, and Kluuu every 4 days. Most recently, Hazelnote was updated on October 28, 2026 and Kluuu on October 28, 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.*