# 독기 vs 비수다

The clearest difference is review sentiment: 독기 at 93% against 비수다's 0%. 독기 also leads on monetization model (ad-supported vs free with in-app purchases). 비수다's advantage is ads (none vs shown) and iOS requirement (15.0 vs 18.0). On price, update cadence, 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.

독기 ships an update every 5 days, 비수다 every 2 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | 독기 | 비수다 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **93.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 61 MB | 53 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [dongwan ryoo](https://appshunter.io/developer/1693769160) | [Seungwoo Lee](https://appshunter.io/developer/1858119568) |

## What reviewers say

### 독기

[App page](https://appshunter.io/ios/app/id6753966506)

Access past exam papers for Korean language reading comprehension, categorized by subject area and year. Download PDF files for various exams, including the national college entrance test and mock evaluations.

**Highlights:** Subject area PDF downloads, Yearly exam PDF downloads, National college entrance test papers, Mock evaluation papers, Reading comprehension focus

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

**In-app purchases:** none


### 비수다

[App page](https://appshunter.io/ios/app/3/id6795456254)

This app provides extensive practice for Korean college entrance exam reading comprehension passages. It offers a structured three-read approach, daily curated texts, and spaced repetition for reviewing incorrect answers. AI-powered explanations help users understand complex reasoning.

**Highlights:** Extensive practice with 185 passages and 2,041 questions, Structured three-read training method, Daily curated passages based on target exam date, Spaced repetition for reviewing incorrect answers, AI-powered explanations for difficult questions, Learning reminders to maintain study flow

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

**In-app purchases:** none


## Frequently asked questions

### Is 독기 free?

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

### Is 비수다 free?

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

### Do 독기 or 비수다 have ads?

독기 shows ads; 비수다 does not.

### Which is updated more often, 독기 or 비수다?

독기 ships an update every 5 days, and 비수다 every 2 days. Most recently, 독기 was updated on November 3, 2026 and 비수다 on November 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.*