# 수능 한국사의 정석 vs Killer Math

The clearest difference is in-app purchases: Killer Math at none against 수능 한국사의 정석's 1. Killer Math also leads on update cadence (every 4 days vs every 10 days). 수능 한국사의 정석's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. 수능 한국사의 정석 sells 1 in-app purchase, starting at $0.99 per month. Killer Math asks for nothing beyond the download.

수능 한국사의 정석 ships an update every 10 days, Killer Math every 4 days. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 수능 한국사의 정석 | Killer Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 72 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [minjae jung](https://appshunter.io/developer/1838270174) | [CHUL HYUN LEE](https://appshunter.io/developer/297999549) |

## What reviewers say

### 수능 한국사의 정석

[App page](https://appshunter.io/ios/app/id6752485751)

This app offers a condensed review of essential Korean history concepts for standardized tests. It's designed for quick study sessions, focusing on core material to boost exam readiness. Ideal for students needing to cram or grasp key points efficiently.

**Highlights:** Essential concepts for standardized tests, Quick review for last-minute cramming, Offline-first, privacy-focused design, Practice mock exams, Covers all historical periods

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 프리미엄 | $0.99 | per month |


### 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 수능 한국사의 정석 free?

수능 한국사의 정석 is free to download, with in-app purchases available.

### Is Killer Math free?

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

### Do 수능 한국사의 정석 or Killer Math have ads?

Both 수능 한국사의 정석 and Killer Math show ads.

### Which is updated more often, 수능 한국사의 정석 or Killer Math?

수능 한국사의 정석 ships an update every 10 days, and Killer Math every 4 days. Most recently, 수능 한국사의 정석 was updated on September 28, 2026 and Killer Math on October 1, 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.*