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I've played this Sudoku game for a while before rating it. It's also the only time I've ever played a sudoku game. I think the app is great. I especially like the note taking ability to solve the puzzle, writing in numbers that are possible in squares. At first I didn't think it valuable but it is important on the higher/harder difficulties. The whole user interface of highlighting boxes (all of that same number on the grid) is useful. Selecting numbers, removing them s from the board when they are all used (found) is smart thinking by the developers. Bottom line, I think the developers thought through and put into the game all the elements a player would want and need. This is definitely a game I'm keeping. Because it is a free game it is a true winner that you should have in your games selection!

I have been addicted to this app for years, and it is certainly the best sudoku app that I've ever downloaded. I do not play every level- only hard and occasionally expert, but every puzzle seems to use the same two or three go-to numbers . I can almost always guarantee that the numbers 4 and 6 are going to be the first completed on every single hard level puzzle. It's irritating to be continually playing what seems to be the exact puzzle over and over again with the numbers just moved around in different patterns. This is not an issue that many reviewers have, and it is extremely minor compared to glitches in the app that others have had. It's just obnoxious. It doesn't stop me from playing constantly though! I just brush it off as my OCD and keep playing.

I've spent a lot of time playing this game, and it's good. My only complaint is the mistake tracker. I wish I could be allowed to be able to make mistakes without being given the answer. At least there should be a setting where I have that choice. Sometimes at the end, I'm trying to make a good time and I've got it figured out and I accidentally hit the wrong key, or I don't change from the permanent selection to the notes selection and I get a mistake. Also, on expert, sometimes I do actually 'guess' between two possibilities to see which one will play out. I can't do that with this version because I'm marked with a mistake and the answer is given. But, considering how often I use the app, I think it would be hypocritical to give it less than a 4 star rating.

I like how the game keeps track of previous scores; you can push yourself for better speed & accuracy. For a free app, the adverts are acceptably visible but non-obtrusive. To make the ‘expert’ level more challenging, I only allow up to three ‘hints’ of any given number per block of nine; if, say, a number six has four possible squares inside a given block, I won’t enter any hints for six in that block until one of those squares is solved by another number. One more twist: at ‘expert’ level, sometimes at the outset a new game will give you none of the squares in a certain block solved. I’ll enter hints only (three max) in that block and never actually enter the solutions, but only take away incorrect numbers as the game progresses. Long review, I know, but hey, I’m kinda like addicted...

The developers are aware of how the update broke a previously flawless game. To their credit, I got a response almost 5 weeks ago that they were going to fix it. Evidently, it is not high on their list of things to fix. In their efforts to incorporate even more obnoxious advertising, they somehow have broken the game. I realize they are entitled to earn money. But to break something in that quest is hardly a way to do it. I will admit, though, that they have created or allowed the MOST OBNOXIOUS ADS I've ever seen in a game. I hope the advertisers are listening because I will NEVER buy any product that SCREAMS at you to buy it! Advertising can be effective without being obnoxious. Things like the distracting penguins will never cause me to even consider buying the product.

When my old iPad was no longer supported for this app, I downloaded & tested out about a dozen other apps. I JUST want to play Sudoku. I don’t want/need “jazzed up bells & whistles,” just make GAME PLAY useful w/as little frustration as possible, thank you. ONLY Sudoku app I’ve found that does THAT. I deleted ALL the alternatives & just played “old fashioned” paper & pencil Sudoku. Returned to iPhone last week & am ECSTATIC to discover my FAVORITE Sudoku app available again! Forgot what a PLEASURE playing Sudoku could be! Find the perfect settings for how YOU like to play & forget all those others! All I need is to have current digit I’m looking for HIGHLIGHTED on board & remove optional numbers below when I’ve found all of that digit = easy to please 😁 so why was that so hard for all those other apps???

This is a well-done app. Light years beyond pencil and paper! My favorite feature is that when I enter "notes" showing possible numbers for a square, and then I figure out the number of another square in the same dimension, it will auto-remove that number from the note if I configure the game to allow that. My main problem is that my fat finger sometimes touches the wrong key accidentally, but not much they can do about that. Update: They DID do something about it! Instead of dragging a number onto the squares, I can tap the destination square to select it, and then tap the number, and if I hold my finger on the number for a second it will display the number above my finger to verify before I release. This is a very well-designed game!!

Great help getting my mind off things. Sudoku is a puzzle game that really doesn’t have anything to do with numbers aside from being symbols. If you’ve never played, give this a try and begin with the “Flash” game. It is easiest for beginners. It is a very simple game and is only more challenging once you begin games with less numbers/symbols. Note to developer: You could give more direction and explanation for beginners and even use some simple pics or letters instead of numbers for a set of puzzles. (Should I give this app less than five stars? Nah.) I’ve been doing sudoku for decades. I spent a great deal on sudoku puzzle books in years past. Glad I don’t have to anymore. Thanks for your work on design and I wish you continued success. Be well.

I deleted the game as I said that I would and went about looking for other Sudoku games. I noticed that this one did update their platform and the game looked superior so I tried it. In a week I discovered that the game still has multiple issues and more than I remember from the previous version. One game was down to one number and two empty spaces. It should have been easy from there, right? Wrong! Putting that number into the first empty space I chose became an error. Placing the number in the other empty space showed one empty space left with no numbers left to choose from at the bottom. I tried to snap a picture of it and couldn’t before the hidden number appeared. My only mistake was cheated upon me by the game. True, I should have noticed the sector I was placing the (what appeared to be) the last number already contained that one, but seriously, if you can’t trust the game to reveal its true settings then you can’t trust the game. It’s a pretty game, I’ll give it that. But, I don’t like it. Untrustworthy. Slow, locks up a lot, the sound does not always coincide with what you are seeing. The Chinese have an old saying, no matter how good the fish looks, if the head stinks then the whole fish is bad. Might I reiterated, the game had always performed perfectly, best ever until a software update from Apple sometime back, five or seven updates ago. I said so immediately.

I never bought the ad free version of you app since you do not seem to care about my complaint that the tile size for selecting numbers is too small and they are too close together for my fingers. It’s frustrating to get penalized because your finger hits an adjacent number in error frequently. Today though. I am ready to dump this app all together, 5 times in a fairly short period of time, an audio ad started playing while I was playing the game, not in between games like the other ads. My phone was muted, but still the sound played, you may think I have no choice but to be bombarded by sound as even when I am choosing to play with my sound off, but I can delete your abusive ap and never download another app created by you. Maybe you will take this seriously, maybe not. I am going to give you a few days to change your policy before I delete it.

Update: Most of the issues I had with the UI from before have been resolved. I'm glad that pausing no longer takes away multipliers, too! Still my favorite Sudoku app, and I come back to it often these days. It has made me a better Sudoku player overall haha. Original review: For the most part, this is a fabulous sudoku app. I like that the rounds are timed--adds a little more suspense. I also really like that it's connected to GameCenter. My only problems are with the touch responses and the pause screen. Whenever you pause (either by accident--tapping a blank square too many times prompts the pause screen to show up--or on purpose) takes a multiplier away automatically. I also accidentally tap the ads A LOT, since they're so close to the number row and I have fat finger syndrome. Any time you come back from an ad click-away, you lose another multiplier. Super-aggravating when you're on a roll and you're about to beat your old high score. Combined, these are the only reasons I'm taking away a star. Other than the minor UI annoyances and how little stupid things cause your multiplier to decrease, this really is a great Sudoku app (even better that it's free!). I don't like using normal Sudoku apps now that I'm so used to racing against the clock!

There are some issues that need to be worked out. I've just noticed that despite my phone being on silent, any time a game is finished and a new game begins, the first tile I touch makes a sound. The first time this happened, I double checked and sure enough my phone was silent but perhaps I was hearing things? Nope, it still happens... I also wish the buttons were a little more sensitive. Going back and forth between the notes function and the live tiles, I often click the notes button to turn it on and end up laying a live tile because it didn't actually kick on. Of course when this happens it is typically the wrong tile that goes down and I get a penalty mark. Also with the screen sensitivity, many times I accidentally grab the wrong tile but it's too late and I get a penalty. I wish there was some sort of time delay where if you press the correct tile within like .2 seconds it would let you put that one down and not be penalized. Otherwise this is the best sudoku app I've found in the App Store.

First off I got about 25 hours of play time on this the last year so this is by no means a first players impression. Let me say right off the bat this is a fun game but it is also too easy. Right now my fastest expert is 1:59 and that is due to the UI limitation of having to select each number and each tile vs just sticking with the last number you used. This brings me to my next point. The scoring system makes no sense. For 3 months my highest score was a Hard puzzle complete in 6 minutes mean while my under 3 minute expert puzzles were always 6-9 thousand points under the score. That was even after solving all numbers in direct descending order. Frankly if you're playing for the score it might as well be "Whose Line is it Anyway". A global leaderboard would be nice and get rid of that dumb cheer, man is it annoying.

First off, let me say that I have loved this game and that this has to be the only game that I actually consistently played. However the pop ups have made my enjoyment of the game non existent....in fact, they only serve to aggravate me to the point that I’ve stopped playing the game for weeks at a time. I frequently give up playing after one or two games because the ads and the pop ups just take so much from my enjoyment of the game that it’s just not worth it. No more. I’ve been playing it for years, and in fact I have paid to be rid of these ads. However after one of your upgrades this fact was apparently lost and in spite of having paid, I am again stuck with ads. This I find not only poor business practice but rather typical of the underhanded manner in which Apple finds ways to take money from unsuspecting customers. I was so desperate to play that I was willing to pay again, just to be free of those ads! However..... when I looked for a way to pay for the game, none was evident, which means the ad revenue is way more than what you get from me when I pay! Well, I’ve had enough. This customer is not satisfied. You’ve taken my money from me and continue to force me to watch ads. Unless you restore my paid up status, I will no longer play this game.