# Math Connect vs Killer Sudoku

The clearest difference is update cadence: Killer Sudoku at every 3 months against Math Connect's every 42 months. Math Connect's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Math Connect sells 5 one-off in-app purchases and Killer Sudoku sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Math Connect ships an update every 42 months, Killer Sudoku every 3 months. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Math Connect | Killer Sudoku |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 42 months | **Every 3 months** |
| Size | 83 MB | 131 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dong Tran](https://appshunter.io/developer/961632428) | [SyGame](https://appshunter.io/developer/1367827155) |

## What reviewers say

### Math Connect

[App page](https://appshunter.io/ios/app/math-connect-math-workout/id1291679615)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 20 rubies | $0.99 | one-time |
| 50 rubies | $1.99 | one-time |
| 120 rubies | $3.99 | one-time |
| 200 rubies | $5.99 | one-time |
| 500 rubies | $11.99 | 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 Connect free?

Math Connect is free to download, with in-app purchases available.

### Is Killer Sudoku free?

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

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

Both Math Connect and Killer Sudoku show ads.

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

Math Connect ships an update every 42 months, and Killer Sudoku every 3 months. Most recently, Math Connect was updated on November 6, 2026 and Killer Sudoku on November 5, 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.*