# Killer Sudoku Challenge — Only killer can take it

> Sudoku and Kakuro hybrid logic puzzle game with cage sum challenges. (iPhone/iPad app by Alven Kam.)

- Source: https://appshunter.io/ios/app/killer-sudoku-challenge/id1481922813 (this page in markdown: same URL + `.md`)
- Developer: [Alven Kam](https://appshunter.io/developer/1227687322)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 11 MB
- Languages: English
- Released: 2019-10-14
- Data updated: 2026-06-04
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/killer-sudoku-challenge/id1481922813/reviews.md

## What is Killer Sudoku Challenge?

Killer Sudoku

A combination of Sudoku and Kakuro Challenges. It to have both challenges within 1 game board, unique digit in a row, column, grid, and at the same time unique digit within the designated caged-grid that could sum up to cage value.

You’ll never regret having this Killer Sudoku Challenge, which is just perfectly challenge your mind, your logical thinking skill, your brain cells!

Interrupted? Need a Break? Exit Killer Sudoku Challenge and you’ll get to see your incomplete puzzle is saved and awaiting for your return.

Stuck? Need some guide? Simply click on hints and you'll get an answer right away! Useful hints as aid, why not!

Unlimited puzzles with varied level of difficulty to fit your choice.

Feature:
- Intuitive Number Pad
- Smart Notes
- Conflict Checking
- Auto Save Mode
- Levels of Difficulty
- Endless, Randomly Generated Puzzles
- Game Timer
- Pause/Resume Puzzle
- Smart Hints
- Number combination hints

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/killer-sudoku-challenge/id1481922813/reviews.md

### 1/5 — Suggestions to Bring Rating Up

*2020-03-30*

Things that I like, besides that it is killer sudoku:
1. Being able to enter pencil marks.
2. Pencil marks are always displayed in numerical order.
3. Ad at the bottom is unobtrusive.
4. Games are included with the installation. No need to buy them. Although the hints need to be purchased, I never use hints. Since you're not going to make money off me, maybe the way you can do this is to add more puzzles (especially ones more difficult than level 4) but only AFTER you fix all or some of the isues, especially the nonunique solutions one.
Things that ruin it for me - fixing all or some of them would bring the ratings up.
1. THE most important, and the main one that gets this only a single star (and would have been zero stars if permitted) - Solutions are not unique!
2. Level 4 (IV) is still not difficult enough for me. Need a level 5 or higher!
3. I don't like being timed! Need a way to turn off the timer but keep the game going. And remember the timer turned off between sessions! Make it one of the options.
4. Need an undo button plus a quick way to clear pencil marks from cells.
5. It's not made clear what the sum option is. I didn't notice what effect it had when I toggled it on or off.
6. Need a way to check if the whole board that I've entered is correct. Right now, the only way to get any type of checking is to put in a number that's already in the row, column, square, or number cage. Which leads me to
7. I actually don't like seeing the number in red if it's a duplicate. I prefer to enter it and live with the consequences.
8. Personal preference - I like my killer sudoku puzzles to be symmetric. I think I did get one symmetric puzzle, so maybe you mix them up. If there are at least some symmetric ones, that should be okay, since others may prefer ones that aren't symmetric.

## Frequently asked questions about Killer Sudoku Challenge

### What is Killer Sudoku Challenge?

Killer Sudoku Challenge is a logic puzzle game that merges Sudoku and Kakuro. It requires players to place unique digits in rows, columns, and grids, while also ensuring digits within designated 'caged' areas sum up to a specified value.

### How does Killer Sudoku Challenge work?

The game presents a grid where you must fill in numbers. Each row, column, and 3x3 box must contain unique digits. Additionally, 'cages' are marked on the grid, and the sum of the numbers within each cage must equal the number shown in its corner.

### Does Killer Sudoku Challenge have ads?

Yes, Killer Sudoku Challenge contains advertisements. This is common for free mobile games that offer in-app purchases.

### Can I pause and resume my game in Killer Sudoku Challenge?

Yes, Killer Sudoku Challenge features an auto-save mode and allows you to pause and resume your puzzle. This means you can exit the game and return to your incomplete puzzle later without losing progress.

### Are there different difficulty levels in Killer Sudoku Challenge?

Yes, Killer Sudoku Challenge offers levels of difficulty to suit your preference. It also provides endless, randomly generated puzzles, ensuring a constant supply of new challenges.

### Does Killer Sudoku Challenge offer hints?

Yes, Killer Sudoku Challenge includes a smart hints feature. If you get stuck, you can click on hints to receive guidance or even a direct answer to help you progress.

### What devices is Killer Sudoku Challenge available on?

Killer Sudoku Challenge is designed for iOS devices, specifically supporting iPhone, iPad, and iPod.

### What is the age rating for Killer Sudoku Challenge?

Killer Sudoku Challenge has an age rating of 4+. This indicates it is suitable for children aged four and older.

## Version history (last 5 releases)

### 1.8 — 2022-06-08

Have fun with Killer Sudoku Challenge! Leave us feedback on your gaming experience, we will gladly accept any comments that helps us improve.

Updates in this release:
- Bug fixes and performance improvements

### 1.7 — 2021-11-08

Have fun with Killer Sudoku Challenge! Leave us feedback on your gaming experience, we will gladly accept any comments that helps us improve.

Updates in this release:
- Update iOS 15 icon
- Bug fixes and performance improvements

### 1.6 — 2021-06-30

Have fun with Killer Sudoku Challenge! Leave us feedback on your gaming experience, we will gladly accept any comments that helps us improve.

Updates in this release:
- Bug fixes and performance improvements

### 1.5 — 2021-02-02

Have fun with Killer Sudoku Challenge! Leave us feedback on your gaming experience, we will gladly accept any comments that helps us improve.

Updates in this release:
- Add new privacy request - App Tracking Transparency
- Bug fixes and performance improvements

### 1.4 — 2020-09-19

Have fun with Killer Sudoku Challenge! Leave us feedback on your gaming experience, we will gladly accept any comments that helps us improve.

Updates in this release:
- Add new privacy request - App Tracking Transparency
- Bug fixes and performance improvements

## Apps similar to Killer Sudoku Challenge

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku: Killer, Classic Sudoku](https://appshunter.io/ios/app/sudoku-killer-classic-sudoku/id6476656409) | 4.7 (10) | Free | Games |
| [Sudoku - Soduko](https://appshunter.io/ios/app/sudoku-soduko/id1466592441) | 3.5 (4) | Free | Games |
| [Killer Sudoku by Logic Wiz](https://appshunter.io/ios/app/killer-sudoku-by-logic-wiz/id1641151077) | 4.9 (173) | Free | Games |
| [Mister Sudoku](https://appshunter.io/ios/app/mister-sudoku/id369602654) | 4.7 (106) | Free | Games |
| [Total Sudoku](https://appshunter.io/ios/app/total-sudoku/id1147298304) | 4.8 (53) | Free | Games |
| [3D Four-In-A-Row](https://appshunter.io/ios/app/3d-four-in-a-row/id6745196656) | 5.0 (1) | Free | Games |

## More apps by Alven Kam

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All apps by Alven Kam: https://appshunter.io/developer/1227687322

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*