# Sudoku vs Killer Sudoku Challenge

The clearest difference is review sentiment: Sudoku at 100% against Killer Sudoku Challenge's 0%. Sudoku also leads on rating (4.3 vs 1.0) and update cadence (every 3 weeks vs every 4 months). Killer Sudoku Challenge's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sudoku sells 7 one-off in-app purchases and Killer Sudoku Challenge sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sudoku holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Sudoku has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Sudoku's written reviews are positive against 0% of Killer Sudoku Challenge's.

Sudoku ships an update every 3 weeks, Killer Sudoku Challenge every 4 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sudoku | Killer Sudoku Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (10 ratings)](https://appshunter.io/ios/app/sudoku-evolve-your-brain/id1434863192/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/killer-sudoku-challenge/id1481922813/reviews) |
| Number of ratings | **10** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 11 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Happy Popcorn Games LC.](https://appshunter.io/developer/6808426572) | [Alven Kam](https://appshunter.io/developer/1227687322) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-evolve-your-brain/id1434863192)

Engage in logic-based number puzzles to sharpen your mind and improve focus. Progress from an amoeba to human by solving thousands of handcrafted Sudoku challenges across eight difficulty levels. Enjoy daily puzzles, customizable themes, and offline play.

**Highlights:** Thousands of handcrafted Sudoku puzzles, 8 balanced difficulty levels, Step-by-step hints, Daily Sudoku challenges, Beautiful customizable themes, Offline play

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hint x 20 | $1.99 | one-time |
| Quick Mode x 20 | $1.99 | one-time |
| Hint x 75 | $5.99 | one-time |
| Quick Mode x 75 | $5.99 | one-time |
| Remove Ads | $9.99 | one-time |
| Hint x 180 | $12.99 | one-time |
| Quick Mode x 180 | $12.99 | one-time |


### Killer Sudoku Challenge

[App page](https://appshunter.io/ios/app/killer-sudoku-challenge/id1481922813)

This logic puzzle game combines Sudoku and Kakuro elements on a single board. Solve unique digit challenges within rows, columns, grids, and caged areas that sum to specific values. Features include auto-save, smart hints, and adjustable difficulty levels for endless gameplay.

**Highlights:** Sudoku and Kakuro hybrid gameplay, Caged sum challenges, Intuitive number pad, Smart notes and conflict checking, Auto-save and pause/resume, Smart hints, Endless randomly generated puzzles

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Killer Sudoku 20 Hints | $0.99 | one-time |
| Killer Sudoku 50 Hints | $1.99 | one-time |
| Killer Sudoku 100 Hints | $2.99 | one-time |


## Frequently asked questions

### Is Sudoku free?

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

### Is Killer Sudoku Challenge free?

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

### Which has better reviews, Sudoku or Killer Sudoku Challenge?

Sudoku is rated higher. Sudoku averages 4.3 out of 5 from 10 ratings, while Killer Sudoku Challenge averages 1.0 from 1 ratings.

### Do Sudoku or Killer Sudoku Challenge have ads?

Both Sudoku and Killer Sudoku Challenge show ads.

### Which is updated more often, Sudoku or Killer Sudoku Challenge?

Sudoku ships an update every 3 weeks, and Killer Sudoku Challenge every 4 months. Most recently, Sudoku was updated on November 2, 2026 and Killer Sudoku Challenge on November 3, 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.*