# 성인의 수학 vs Killer Math

The clearest difference is update cadence: Killer Math at every 4 days against 성인의 수학's every 3 weeks. 성인의 수학's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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.

성인의 수학 ships an update every 3 weeks, Killer Math every 4 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | 성인의 수학 | Killer Math |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 48 MB | 46 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mijin Kim](https://appshunter.io/developer/1717382242) | [CHUL HYUN LEE](https://appshunter.io/developer/297999549) |

## What reviewers say

### 성인의 수학

[App page](https://appshunter.io/ios/app/id6782822659)

**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 성인의 수학 free?

성인의 수학 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 성인의 수학 or Killer Math have ads?

Both 성인의 수학 and Killer Math show ads.

### Which is updated more often, 성인의 수학 or Killer Math?

성인의 수학 ships an update every 3 weeks, and Killer Math every 4 days. Most recently, 성인의 수학 was updated on October 7, 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.*