# 2Planner vs 오답노트AI

The clearest difference is in-app purchases: 오답노트AI at none against 2Planner's 6. 오답노트AI also leads on ads (none vs shown) and update cadence (every 2 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 2Planner sells 6 in-app purchases, starting at $3.99 per month. 오답노트AI asks for nothing beyond the download.

2Planner ships an update every 10 days, 오답노트AI every 2 days. Both last shipped on September 20, 2026.

## The numbers

| Metric | 2Planner | 오답노트AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 470 MB | 28 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [JeongUn Lee](https://appshunter.io/developer/1857998480) | [2Labs](https://appshunter.io/developer/1089573745) |

## What reviewers say

### 2Planner

[App page](https://appshunter.io/ios/app/2planner-notes-pdf-timer/id6756019381)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 클라우드 | $3.99 | per month |
| 프로 | $7.99 | per month |
| Premium 월간 | $14.99 | per month |
| AI 라이트 패키지 | $3.99 | one-time |
| AI 1000회 | $9.99 | one-time |
| AI 2000회 | $19.99 | one-time |


### 오답노트AI

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


## Frequently asked questions

### Is 2Planner free?

2Planner is free to download, with in-app purchases available.

### Is 오답노트AI free?

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

### Do 2Planner or 오답노트AI have ads?

2Planner shows ads; 오답노트AI does not.

### Which is updated more often, 2Planner or 오답노트AI?

2Planner ships an update every 10 days, and 오답노트AI every 2 days. Most recently, 2Planner was updated on September 20, 2026 and 오답노트AI on September 20, 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.*