# 오픽이지 vs 날벼락

오픽이지 and 날벼락 are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

오픽이지 ships an update every 5 days, 날벼락 every 3 days. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 오픽이지 | 날벼락 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 41 MB | 52 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kison Kim](https://appshunter.io/developer/6788418837) | [eunhyeok yang](https://appshunter.io/developer/6795759066) |

## 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


### 날벼락

[App page](https://appshunter.io/ios/app/id6795970069)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 오픽이지 free?

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

### Is 날벼락 free?

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

### Do 오픽이지 or 날벼락 have ads?

Neither 오픽이지 nor 날벼락 shows ads.

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

오픽이지 ships an update every 5 days, and 날벼락 every 3 days. Most recently, 오픽이지 was updated on October 25, 2026 and 날벼락 on October 6, 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.*