# 오답노트 vs WoofNote

The clearest difference is in-app purchases: 오답노트 at none against WoofNote's 3. 오답노트 also leads on device support (3 vs 1). WoofNote's advantage is update cadence (daily vs every 3 weeks). On price, ads and iOS requirement there is nothing between them.

Both are free to download. WoofNote sells 3 in-app purchases, starting at $3.99 per month. 오답노트 asks for nothing beyond the download.

오답노트 ships an update every 3 weeks, WoofNote daily. Both last shipped on October 25, 2026.

## The numbers

| Metric | 오답노트 | WoofNote |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 119 MB | 63 MB |
| Requires iOS | **15.5** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Huiyoung Yun](https://appshunter.io/developer/1895789908) | [Hyeon Jin Ko](https://appshunter.io/developer/1871874564) |

## What reviewers say

### 오답노트

[App page](https://appshunter.io/ios/app/id6775327965)

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

**In-app purchases:** none


### WoofNote

[App page](https://appshunter.io/ios/app/woofnote-quiz-notes/id6785422995)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WoofNote Pro (1 Month) | $3.99 | per month |
| WoofNote Pro (3 Months) | $7.99 | per 3 months |
| WoofNote Pro (1 Year) | $20.99 | per year |


## Frequently asked questions

### Is 오답노트 free?

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

### Is WoofNote free?

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

### Do 오답노트 or WoofNote have ads?

Neither 오답노트 nor WoofNote shows ads.

### Which is updated more often, 오답노트 or WoofNote?

오답노트 ships an update every 3 weeks, and WoofNote daily. Most recently, 오답노트 was updated on October 25, 2026 and WoofNote on October 25, 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.*