# Math Nexus vs Killer Sudoku

The clearest difference is price: Killer Sudoku at Free against Math Nexus's $2.99. Killer Sudoku also leads on iOS requirement (15.0 vs 17.4). Math Nexus's advantage is ads (none vs shown) and update cadence (every 9 days vs every 3 months). On in-app purchases and device support there is nothing between them.

Killer Sudoku is free to download; Math Nexus costs $2.99 up front. Math Nexus sells 1 one-off in-app purchase and Killer Sudoku sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Math Nexus ships an update every 9 days, Killer Sudoku every 3 months. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Math Nexus | Killer Sudoku |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 9 days** | Every 3 months |
| Size | 8 MB | 131 MB |
| Requires iOS | 17.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [SyGame](https://appshunter.io/developer/1367827155) |

## What reviewers say

### Math Nexus

[App page](https://appshunter.io/ios/app/math-nexus/id6747086924)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math Nexus 5x5 | $0.99 | one-time |


### Killer Sudoku

[App page](https://appshunter.io/ios/app/killer-sudoku-brain-puzzle/id6760898039)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $9.99 | one-time |


## Frequently asked questions

### Is Math Nexus free?

Math Nexus costs $2.99, and also offers in-app purchases.

### Is Killer Sudoku free?

Killer Sudoku is free to download, with in-app purchases available.

### Do Math Nexus or Killer Sudoku have ads?

Killer Sudoku shows ads; Math Nexus does not.

### Which is updated more often, Math Nexus or Killer Sudoku?

Math Nexus ships an update every 9 days, and Killer Sudoku every 3 months. Most recently, Math Nexus was updated on October 25, 2026 and Killer Sudoku on October 8, 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.*