Sudoku

Excellent app. Works well, has sufficient puzzles to keep me happy for quite a while, and useful stats. Of course, there could be additions (additional more difficult levels is just one) but, for free, I can't fault it!

I really like this game. But the paid version keeps disappearing from my phone, then i have to re-down load. No other apps are doing this. Just posting here incase someone else is having this issue.

No landscape or display rotate view. Bummer on a tablet; can't stand it on the table to play Sudoku while hoovering down fruit-loops! Also awkward to hold the tablet vertically. Otherwise, a decent Sudoku game with nice eye candy.

Works like a dream no lag, no issues all you want from a sudoku game and cheap too.

A really good implementation of sudoku. My only gripe is that I've gone through all the level 5 games three times and wish there were more available.

1 star because you are not updating all your apps except for the chess app. And it is not fair because they are both paid.

Love it. Had the free one and upgraded to paid. Excellent version of sudoku. AI is awesome, minimal ads in free and only .99 cents to buy. Got to support that.

Great way to learn and enjoy sudoku. 300 games at each of 5 levels. Additional games to download would be nice!

Great puzzle, interface. Would be an excellant interface for a hexadecimal (16x16) sudoku. Hint! Hint!

Works really well, as sudoku puzzles go they've thought it out well and presented it well.

Best sudoku on android with clean and nice interface. Well worth the price for no ads.

Need cloud backup please

Worth the money

So good

Integration is missing to share the achievements!

Really good app to play when I am having to wait.

I really wish the timer would pause when the program is minimized. Right now it keeps running in the background and messes up my solving time if I leave the program.

This is Sudoku app 5. I liked Sudoku Fun but ads everywhere used 700MB data in 3 weeks. I figured pay for it and save data. One of those was terrible. This has great option selections, easy graphics, outlined boxes, highlights all same number, auto notes, auto error color, all selectable, and it is tougher. I was doing them in 2.5 to 3.5 minutes. This takes me 12. Solvable but challenging. I only wish it highlighted the row and column of the selected box. It's a keeper!

Very good Sudoku game. Love it. Perhaps backup via Google would be nice. When I reinstall my phone i have to copy the appfolder manually (forgot it once or twice.... Shame on me)

There's no need for large level switches to be displayed all time. And there's no need for the introductory page every time I start the game, just to force me to push the PLAY! button, when I obviously want to play. I am missing automatic random selection of the next problem from within the previously selected level. And I really am missing real hard brain teasers. There's only 5 simple difficulty levels, NO REAL BRAIN-TEASERS, e.g. with 17 numbers set only.

Works like a dream no lag, no issues all you want from a sudoku game and cheap too.

I have several apps from AI Factory, and I love them all. Sudoku like all of their other apps that I have, is well put together and very playable. I do wish that there was an option where I could manually enter a game (like the one in the newspaper). I used to have a Sudoku app that allowed that, and it sure was convenient.

My phone had to be factory reset and when the game was redownloaded, all my user information and previous games, stats...etc were lost. Any way to get that back? Would give it a 5 if that is possible.

I gave it three stars cause I can not use it in portrait style. I like to put it up on tables on the stand and play. Portrait style is needed to do this.

Need cloud backup please

Good game....

I've played this probably more than any other game app. Figured I'd make the leap and get rid of the annoying blinky ads.

Simply love it.....I'm totally addicted to playing....But I do think a clear button would be a good idea for instead of having to press undo until all numbers inputted are cleared......... ETA: Al Factory Limited: Thanks....

I think it could play a lot better. I'd like to be able to click a number first then be able to click in each square it goes in rather than the rather clumsy way it's done now. I hope we see my suggestion soon.

Can you use google api to save game data? And we can restore it whenever we link the game to our account.

I have used several Sudoku apps, and this is my favorite.

As with all AIFactory games really beautiful interface, but I would prefer another colors, personaly I do not like green, it's not necessary to use strictly different colors for different games. Missing automatic random selection of the next problem with the previously selected level. Only 5 simple difficulty levels, NO REAL BRAIN-TEASERS, e.g. with 17 numbers set only.

As stated in my FREE versions reviews of "AI FACTORY" titles : you've gained a customer! Extremely well coded and down right FUN games...keep up the good work. Thanks.

Purchased this app after trying the "free" version thinking I would have another 1500 puzzles to solve only to find that it is the exact same set of puzzles! Disappointing.

I've been solving this app's 1,500 Sudoku puzzles for years and have no complaints, especially as they've resolved the few awkwardnesses with the timer, lost stats, etc. A higher-contrast day mode and darker night mode would be welcome as I've written before.

Updated 07-13-2015. Best!

More themes and board please

Puzzles are easy even on fifth difficulty and they are all 3x3 size. Also needs some kind of progress saving through google+ (maybe even achievements). Unfortunately I rarely see AI Factory Limited actually changing something in their games so this is probably finial product. I don't recommend this game, there are more engaging sudoku apps out there.

as with all AIFactory games - really beautiful splash screen, but after the very first start it's annoying, too long way to start the game. missing automatic random selection of the next problem with the previously selected level. only 5 simple difficulty levels, NO REAL BRAIN-TEASERS.

I've played like 200 games and take like the interface. Ads are not distracting.