# 오픽이지 vs 이어

The clearest difference is monetization model: 이어 at free against 오픽이지's free with in-app purchases. 오픽이지's advantage is update cadence (every 4 days vs every 9 days). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

오픽이지 ships an update every 4 days, 이어 every 9 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 오픽이지 | 이어 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 9 days |
| Monetization | Free with in-app purchases | **Free** |
| Size | 37 MB | 61 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Kison Kim](https://appshunter.io/developer/6788418837) | [SU HEON PARK](https://appshunter.io/developer/6807709264) |

## What reviewers say

### 오픽이지

[App page](https://appshunter.io/ios/app/ai/id6788418835)

Practice for the OPIc English speaking test with realistic mock exams and instant AI feedback. Identify weaknesses in fluency, grammar, vocabulary, pronunciation, and intonation to improve your score and reach your target grade.

**Highlights:** Realistic mock OPIc exams, AI-driven feedback on fluency, grammar, pronunciation, Personalized questions based on background surveys, Practice mode for quick feedback, Score and improvement suggestions, Target grade prediction

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

**In-app purchases:** none


### 이어

[App page](https://appshunter.io/ios/app/ai/id6807708636)

This app generates personalized daily audio content based on your interests. Two AI hosts discuss chosen topics in a conversational format, making learning engaging and convenient for your commute or workouts.

**Highlights:** Personalized daily episodes, AI-powered content creation, Conversational audio format, Topic selection for customization, Resume playback, Content sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is 오픽이지 free?

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

### Is 이어 free?

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

### Do 오픽이지 or 이어 have ads?

Neither 오픽이지 nor 이어 shows ads.

### Which is updated more often, 오픽이지 or 이어?

오픽이지 ships an update every 4 days, and 이어 every 9 days. Most recently, 오픽이지 was updated on October 4, 2026 and 이어 on October 8, 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.*