# ContextVoca vs 오답노트AI

The clearest difference is update cadence: 오답노트AI at every 2 days against ContextVoca's weekly. ContextVoca's advantage is iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ContextVoca sells 5 in-app purchases, starting at $5.00 per month and 오답노트AI sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ContextVoca ships an update weekly, 오답노트AI every 2 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ContextVoca | 오답노트AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 70 MB | 33 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Junghyun Park](https://appshunter.io/developer/1793542095) | [2Labs](https://appshunter.io/developer/1089573745) |

## What reviewers say

### ContextVoca

[App page](https://appshunter.io/ios/app/contextvoca-scan-to-learn/id6758887227)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $5.00 | per month |
| Pro Monthly | $10.00 | per month |
| Basic Yearly | $35.00 | per year |
| Pro Yearly | $70.00 | per year |
| Lifetime Access | $99.00 | one-time |


### 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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 오답노트AI Pro 월간 | $9.99 | per month |
| 오답노트AI Pro 연간 | $79.99 | per year |


## Frequently asked questions

### Is ContextVoca free?

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

### Is 오답노트AI free?

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

### Do ContextVoca or 오답노트AI have ads?

Neither ContextVoca nor 오답노트AI shows ads.

### Which is updated more often, ContextVoca or 오답노트AI?

ContextVoca ships an update weekly, and 오답노트AI every 2 days. Most recently, ContextVoca was updated on October 25, 2026 and 오답노트AI on October 31, 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.*