# 오답노트AI vs Class Notes

The clearest difference is in-app purchases: 오답노트AI at none against Class Notes's 1. 오답노트AI also leads on iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Class Notes sells 1 one-off in-app purchase. 오답노트AI asks for nothing beyond the download.

오답노트AI ships an update every 2 days, Class Notes every 3 days. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 오답노트AI | Class Notes |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | Freemium | — |
| Size | 33 MB | 7 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [2Labs](https://appshunter.io/developer/1089573745) | [TAKASHI KOJIMA](https://appshunter.io/developer/6776510628) |

## What reviewers say

### 오답노트AI

[App page](https://appshunter.io/ios/app/ai-ai/id6787683753)

This app uses AI to automatically create personalized study notes and practice tests from your incorrect answers. Simply photograph your mistakes, and the AI will transcribe them, organize them by subject, and generate similar problems for further practice. It also offers an AI tutor for instant help and tracks your progress with weekly reports.

**Highlights:** AI-generated study notes from photos, Automatic organization by subject and unit, Personalized practice tests with similar problems, AI tutor for instant help with questions, Spaced repetition for review, Weekly progress reports, Printable PDF test creation

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

**In-app purchases:** none


### Class Notes

[App page](https://appshunter.io/ios/app/class-notes-handwritten-notes/id6811054157)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Feature | $5.99 | one-time |


## Frequently asked questions

### Is 오답노트AI free?

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

### Is Class Notes free?

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

### Do 오답노트AI or Class Notes have ads?

Neither 오답노트AI nor Class Notes shows ads.

### Which is updated more often, 오답노트AI or Class Notes?

오답노트AI ships an update every 2 days, and Class Notes every 3 days. Most recently, 오답노트AI was updated on October 7, 2026 and Class Notes on October 13, 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.*