# 독기 vs Killer Math

The clearest difference is iOS requirement: Killer Math at 15.0 against 독기's 18.0. On price, update cadence, 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.

독기 ships an update every 5 days, Killer Math every 4 days. Both last shipped on October 18, 2026.

## The numbers

| Metric | 독기 | Killer Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 93.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 5 days | **Every 4 days** |
| Monetization | Ad-supported | — |
| Size | 61 MB | 46 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) | [CHUL HYUN LEE](https://appshunter.io/developer/297999549) |

## 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


### Killer Math

[App page](https://appshunter.io/ios/app/killer-math/id6785559161)

**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 Killer Math free?

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

### Do 독기 or Killer Math have ads?

Both 독기 and Killer Math show ads.

### Which is updated more often, 독기 or Killer Math?

독기 ships an update every 5 days, and Killer Math every 4 days. Most recently, 독기 was updated on October 18, 2026 and Killer Math on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*