# SEND vs 오답노트AI

The clearest difference is in-app purchases: SEND at none against 오답노트AI's 2. SEND also leads on iOS requirement (15.1 vs 18.0). 오답노트AI's advantage is ads (none vs shown) and update cadence (every 2 days vs every 2 months). On price and device support there is nothing between them.

Both are free to download. 오답노트AI sells 2 in-app purchases, starting at $9.99 per month. SEND asks for nothing beyond the download.

SEND ships an update every 2 months, 오답노트AI every 2 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SEND | 오답노트AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Freemium |
| Size | 65 MB | 33 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [IMGOBOT](https://appshunter.io/developer/1849055808) | [2Labs](https://appshunter.io/developer/1089573745) |

## What reviewers say

### SEND

[App page](https://appshunter.io/ios/app/send-send-quizzes/id6758034904)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 SEND free?

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

### Is 오답노트AI free?

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

### Do SEND or 오답노트AI have ads?

SEND shows ads; 오답노트AI does not.

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

SEND ships an update every 2 months, and 오답노트AI every 2 days. Most recently, SEND was updated on October 24, 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.*