# EBSi 고교강의 vs 레서

The clearest difference is review sentiment: 레서 at 95% against EBSi 고교강의's 36%. 레서 also leads on rating (4.0 vs 3.0) and update cadence (every 8 days vs monthly). EBSi 고교강의's advantage is ratings volume (15 vs 1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

레서 holds the better App Store score, 4.0 against 3.0. That said, the two scores are not equally well evidenced: EBSi 고교강의 has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 36% of EBSi 고교강의's written reviews are positive against 95% of 레서's.

EBSi 고교강의 ships an update monthly, 레서 every 8 days. The most recent releases landed on October 1, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | EBSi 고교강의 | 레서 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (15 ratings)](https://appshunter.io/ios/app/ebsi/id669006959/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/ai/id1619729664/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 35.8% of reviews | **95.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Ad-supported | **Free** |
| Size | 23 MB | 251 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EBS(한국교육방송공사)](https://appshunter.io/developer/704213053) | [Artificial Society Inc.](https://appshunter.io/developer/1627456359) |

## What reviewers say

### EBSi 고교강의

[App page](https://appshunter.io/ios/app/ebsi/id669006959)

This app offers personalized learning experiences with AI-driven course recommendations and progress tracking. It provides features like variable speed playback, offline downloads, and a chatbot for homework help. Users can manage their courses, set learning goals, and connect with instructors.

**Highlights:** AI-powered course recommendations, Variable speed video playback, Offline course downloads, AI chatbot for homework help, Progress tracking and goal setting, Instructor profiles and updates, Customizable exam creation

**Features:** Vision Pro support

**In-app purchases:** none


### 레서

[App page](https://appshunter.io/ios/app/ai/id1619729664)

This app helps students from elementary to high school improve their Korean language skills. It offers AI-powered personalized learning, a vast library of curriculum-based content, and tools for reading, writing, and comprehension. Features include daily learning, monthly reading comprehension tests, and AI-powered feedback for written assignments.

**Highlights:** AI personalized learning curriculum, 30,000+ curriculum-based content, Daily Korean language practice, Monthly reading comprehension tests, AI writing feedback and scoring, AI eye-tracking for reading habits

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

**In-app purchases:** none


## Frequently asked questions

### Is EBSi 고교강의 free?

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

### Is 레서 free?

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

### Which has better reviews, EBSi 고교강의 or 레서?

레서 is rated higher. EBSi 고교강의 averages 3.0 out of 5 from 15 ratings, while 레서 averages 4.0 from 1 ratings.

### Do EBSi 고교강의 or 레서 have ads?

Neither EBSi 고교강의 nor 레서 shows ads.

### Which is updated more often, EBSi 고교강의 or 레서?

EBSi 고교강의 ships an update monthly, and 레서 every 8 days. Most recently, EBSi 고교강의 was updated on October 1, 2026 and 레서 on September 27, 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.*