# 온리원 레슨 vs 푸리

The clearest difference is in-app purchases: 푸리 at none against 온리원 레슨's 10. 푸리 also leads on update cadence (every 3 days vs every 10 days) and iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. 온리원 레슨 sells 10 one-off in-app purchases. 푸리 asks for nothing beyond the download.

온리원 레슨 ships an update every 10 days, 푸리 every 3 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | 온리원 레슨 | 푸리 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 3 days** |
| Monetization | — | Free |
| Size | 201 MB | 138 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [VISANG EDUCATION INC](https://appshunter.io/developer/992780061) | [Hwan Kim](https://appshunter.io/developer/6800942600) |

## What reviewers say

### 온리원 레슨

[App page](https://appshunter.io/ios/app/id6792592251)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 한끝 역사2 윤미 3-2 학습 이용권 (180일) | $79.99 | one-time |
| 한끝 사회1 윤미 1-2 학습 이용권 (180일) | $89.99 | one-time |
| 한끝 역사1 남현민 2-2 학습 이용권 (180일) | $89.99 | one-time |
| 오투 과학 안현정 3-2 학습 이용권 (180일) | $89.99 | one-time |
| 오투 과학 안현정 1-2 학습 이용권 (180일) | $99.99 | one-time |
| 오투 과학 조민서 2-2 학습 이용권 (180일) | $99.99 | one-time |
| 개념+유형 라이트 장계환 1-2 학습 이용권 (180일) | $99.99 | one-time |
| 개념+유형 라이트 이도일 2-2 학습 이용권 (180일) | $99.99 | one-time |
| 한끝 사회2 윤미 3-2 학습 이용권 (180일) | $99.99 | one-time |
| 개념+유형 라이트 장계환 3-2 학습 이용권 (180일) | $99.99 | one-time |


### 푸리

[App page](https://appshunter.io/ios/app/ai/id6800942598)

This app analyzes your step-by-step solutions to past college entrance exam math problems using AI. It identifies not just incorrect answers but also the specific reasoning errors you made, helping you understand why you got it wrong.

**Highlights:** AI analysis of solution steps, Identifies reasoning errors, Automatic grading of multiple-choice and short-answer questions, Automatic error notebook creation, Practice past exam papers, iPad pen support

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

**In-app purchases:** none


## Frequently asked questions

### Is 온리원 레슨 free?

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

### Is 푸리 free?

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

### Do 온리원 레슨 or 푸리 have ads?

Neither 온리원 레슨 nor 푸리 shows ads.

### Which is updated more often, 온리원 레슨 or 푸리?

온리원 레슨 ships an update every 10 days, and 푸리 every 3 days. Most recently, 온리원 레슨 was updated on October 31, 2026 and 푸리 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.*