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  • #: 48102
  • Price: $1.99 In Apple Store
  • Category: Games
  • Updated: 2008-10-31
  • Current Version: 1.2
  • 1.2
  • Size: 1.80 MB
  • Language: English, French
  • Seller: Colin Biggin
  • Requirements: Compatible with iPhone, iPod touch, and iPad. Requires iOS 2.1 or later
  • © 2008 WhiteNile Systems
  •  Add to Favorite apps



KillerSudoku for the iPhone allows you to play both Classic Sudoku and the increasingly popular (and harder) variation known as Killer. Killer Sudoku is already appearing daily in The Times and other newspapers.

If you like Sudoku, then Killer Sudoku is the next level up. It's tough, it's hard, it's... well, Killer!


- Killer Sudoku puzzle generator

- 15, 000 puzzles for Classic Sudoku

- Easy, Medium, and Hard difficulty levels

- Easily enter online or newspaper puzzles

- Pencilling/Annotations (manual or live)

- Error detection

- Save and Open puzzles

- Snapshots

- Lock a number to enter with one touch

- Coloured or outline backgrounds for Killer Sudoku

- Clean uncluttered interface and keyboard

Updates are free.

What's New in Version 1.2

New Features:
- Pencilling/Annotations (manual or live)
- Beginner level on Killer puzzles
- Easier to touch buttons
- French language support

- Killer Engine improved so less duplicate solutions
- Easier to read numbers

Bug Fixes:
- Saving and Opening of games

iPhone Screenshots

KillerSudoku iPhone Screenshot 1
KillerSudoku iPhone Screenshot 2

Video Reviews

No video review.

Customer reviews

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Rated 3/5 based on 3 customer reviews.


2/5 stars

Very disappointing

I was disappointed that this app has so many bugs. I bought this for its Killer Sudoku option because 'Cool Sudoku' has some difficulty retaining pencil marks. Well, this app does not retain filled in boxes. Complete the game before you close it or your efforts will be gone when you reopen. I tried everything -- saving the game, saving under different names, closing quickly, backing out, taking a 'snapshot' (which only made the filled in boxes erase immediately). Huge drawback.
In addition as mentioned above, the so-called snapshot feature which should help you return to a previous version, simply erases your filled-in numbers while keeping your pencil marks. Finally, the option to use colored backgrounds instead of dotted lines to differentiate the sections fails because they often put two boxes of the same color adjacent so you can't tell where one ends and the other begins.
Giving the developer the benefit of the doubt, there must be something extra hard about writing apps for Killer Sudoku since the other app has similar problems while there are a dozen excellent apps for regular Sudoku. But this app currently has too many problems to use, perhaps they can be fixed in an update.

4/5 stars

Mostly awesome

I agree with other reviewers that this app seems to have mostly unsolvable killer sudoku puzzles, but I'm still giving it four stars still because besides that, it's perfect, and I'm putting my faith in the developers to fix this problem since I've now given them $2.

What's awesome: the price is worth it just to play clasic sudoku with the drag feature. You can drag your finger over as many square as you like and place notes on all of them with one tap, this is so amazing. And also, the classic sudoku seems to be more challenging than even expert on other apps, which I like because I sometimes feel like I'm just going through the motions to solve some puzzles, but these seem to need more problem solving.

All in all, will be perfect when they fix the unsolvable puzzle issue, but you can still enter your own puzzle in the morning to have with you in a more convenient way throughout the day.

5/5 stars

New Convert

I love sudoku, but I didn't try killer sudoku until recently. I love it! The app auto saves my game when I exit or get a call. The calc feature is a great help and I also like the different ways to identify groupings. There is a pencil option. With different difficulty levels, it is a great game for those getting started, or people who already love the game. It also has traditional sudoku, too. I don't really write reviews, but was surprised to see the negative ones on here. I guess I bought it after an update. It's well worth the money, IMO!


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The information may be outdated (2011-03-29 13:04:16). For actual information go to iTunes

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