Icon Good Sudoku by Zach Gage

Good Sudoku by Zach Gage

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Good Sudoku by Zach Gage

  • Games
4.4
1.1K ratings
Age Rating

4+

Seller
STFJ LLC
In-App Purchases

$4.99

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User Reviews for Good Sudoku by Zach Gage

4
Good game but needs better quality control

Best sudoku app I’ve found, but drains my phone battery quickly (even after updates) and I repeatedly run into puzzles with non-unique solutions (e.g. where two pairs of numbers can be swapped because they line up in the same rows and columns). This is especially frustrating as the app teaches strategies that explicitly rely on eliminating possibilities that would lead to non-unique solutions. This means that for these specific puzzles, doing what it teaches you will result in being penalized and potentially losing in Arcade or Eternal mode. It also results in situations where you’ve made no mistakes but the puzzle gets into an “unsolvable” (according to its own hint function) puzzle that I have to resort to trial-and-error to solve. Despite these frustrations, it is a fun and well-designed sudoku app and I play it a lot!

a lesser flamingo, Oct 09, 2020
5
Best Sudoku App Ever!

This is the most Awesome Sudoku app ever! I am a casual Sudoku player, started with pencil/paper, then some other Sudoku apps. What I like about Good Sudoku app is it takes away a lot of tedious note taking. At first, I was having a lot of fun finishing Impossible level puzzles fast by using UNDO to go back to fork points. I noticed that some achievements popped up saying I achieved some Sudoku technique. That got me very curious because I didn’t even know so many Sudoku techniques existed. Good Sudoku app actually has a very detailed learning section with a lot of references. I’m learning the proper techniques, and can even solve Impossible puzzles now without using the UNDO button anymore. I love this app! Thanks for teaching me Good Sudoku. Well worth the price.I only wish there’s a way to stay in Highlight mode and Crossout mode without having to constantly click into it. In Eternal mode, I sometimes lose hearts because I though I was still in Highlight/Crossout mode. Also, would be great to have a shortcut to the learning section without exiting the current game.

Aldeth84, Aug 13, 2020
4
Great customization!

UPDATE: I messed around with the settings and disabled most of the hand-holding things I disliked. The level of customization is really amazing. Changed from 3 stars to 4 stars. User interface takes a little to get used to, but is pretty good. OLD REVIEW: I could see how this would be helpful for someone learning how to play sudoku, but as someone who’s used to pen and paper, this seems too easy. You can tap on the numbers to show you what squares could possibly be that number, which takes away the “aha!” moment from me and just makes me feel like the computer is doing all the work. Add that to the auto-enabled “feature” that only lets you put a note of a number if it’s possible with your current. Board state. Sounds good at first, but it takes most of the fun out of it for me. Could be good for others, but way to many crutch features for me.

Dobby come on, Nov 28, 2021
5
Perhaps one of the five greatest apps

I’ve been using my iPhone for 4-5 hours/day for the last 10+ years, and every 3-4 years an app comes along that just changes everything for you. Apps like google maps, or dark sky. Brilliant execution that change how you experience your iPhone and bring joy to your life. Good Sudoku is one of those apps. It changes the process of solving sudoku puzzles from one of relentless scanning and book keeping to one of *really* engaging your higher thought processes and learning advanced techniques. it also, in just 2-3 days, has taught me more about how to solve sudoku puzzles, seamlessly, than i had learned in the previous 20+ years as a casual solver. The interaction is a delight, and i genuinely look forward to each new chance to play with it. These are one of the apps that I would pay money to rate 6 stars, and it’s the sort of app you should have no problem paying $20-$30 for. It’s good enough that i would recommend someone who loves sudoku to buy an iPod touch *just* to play this game.Game changer (literally) - thanks so much to the developer and designer who clearly put their heart and soul into it - you have made my life better.

Ghshephard, Jul 31, 2020
3
Overall good, audio bugs are really irritating

The app pretty much functions as intended, there are ads which can be annoying but it’s to an acceptable degree. What really grates on my nerves while playing is that the background music can be super buggy. It sometimes will play the music for the game selection screen, but when you start playing a puzzle the music will cut out, or it will work fine but then cut out after an ad plays, or it will be silent but will come on for a few seconds and be silent again, and sometimes it will play both the music for the game selection screen as well as for the puzzle at the same time. I have to close and reopen the game multiple times to try to fix it but sometimes this doesn’t work either. This was not really an issue at first but has gotten so persistent to the point that I now avoid playing the game because it’s so frustrating. Still, it’s otherwise a decent app so I don’t have much else to complain about. For me personally though, this may be enough to drive me to uninstall it altogether. Also, I wish there was some kind of dark mode that wasn’t locked behind a paywall, because it honestly hurts my eyes & I hate the color palette, but I’m not willing to spend money just to change that. I’d rather just not play it. But that’s just me.

purplefluffykittens, May 11, 2023
2
Glitches often

I have an iPad eight and my iOS is updated. This game is mostly fun but after a while the glitches really get to you. Sometimes if you push the red pencil to delete options it doesn’t work. Sometimes you can push square after square and it will still be red and sometimes it just goes back to normal. Then you push theNumber you mean to delete and the system thinks you are trying to enter that has the answer and bleeps the error noise. There seems to be no rhyme and reason to the scoring. As you play there is a score recorded in the upper right hand corner. But it seems to have nothing to do with the score that happens at the end. They never match up and don’t seem related at all. I really wish that function keys worked correctly all the time. They just don’t and then it becomes frustrating. I’m taking this off my device for now and maybe I’ll try again one day. They have some good ideas in teaching you how to play sudoku and I do like that it fills in all of your options so you can figure it out.

QuinceButter, May 03, 2021
4
Good start - a couple little things

Hi Zach and Jack, I hope you guys read these reviews. I’m a sudoku junkie and you fellas have yourselves a very nice little app here. I have 2 issues to report, one, kind of a big deal, the other not so much. The one that’s not a huge issue is a graphical issue: on phones that have the notch at the top of the screen like the iPhone X, Xs and 11, there is a graphical glitch that makes the “horns” of the screen white while the rest of it yellow. Now the 2nd issue: related to the Techniques functionality. When browsing a given technique, and then clicking Hint to get more info about the technique, you’re then given an option of Show Me. The issue is that when you click Show Me, there is hardly any time (about a split second) to see what the system is showing you. Almost immediately after clicking show me, the screen gets covered by another dialog box and it’s only options are to go back to the main menu, or try another example. For people to be able to learn, the screen that results from pressing Show Me needs to persist for as long as the user needs it, and further, you should be able to toggle back and forth between the before and after of the number changes. This is the other Sudoku apps do it. Great work so far and hope to see that update soon!

RickshawMe, Aug 01, 2020
1
Bugs bugs bugs

My prior review seems to have vanished for some reason. This is a good app but the bugs are driving me bonkers. The AI that attempts to guess when you’re done eliminating candidates has been extremely flawed from day one and has literally always been more of an annoyance than a help. There is an option to turn it off in settings but the app ignores it. The developers response to my previous review about the setting being ignored? “If you don’t like that feature you can turn it off.” GEE THAT WOULD BE SWELL, MAYBE YOUR APP CAN LISTEN TO ITS OWN SETTINGS. This current release not only STILL doesn’t fix this, it’s now worse. Now not only does the AI still randomly stop selecting a cell/group of cells when attempting to eliminate multiple candidates, it now also randomly switched modes to entering numbers. So in the middle of eliminating candidates it now, without warning, enters the number I’m trying to eliminate. This has caused the app to register multiple “errors” in arcade mode and is really making me angry. Seriously, no one asked for this candidate AI “feature” and it has never worked. It is so buggy that even turning it off doesn’t work. This one thing is completely ruining the experience of an otherwise excellent app and I seriously cannot understand why getting the app to listen when I turn it off in its own settings is apparently so hard for the dev to accomplish.

russellbarnett, Mar 24, 2021
5
Great app, one small bug

This is a great sudoku app, and I’ve played it a ton over the last month. I highly recommend it to anyone who likes sudoku, especially if you’d like to improve in your techniques (or if you didn’t even know there ARE techniques). The only reason I didn’t give this a 5 is because of a recent bug that disrupts the way I play. I love the “Eternal” mode, because I can roll right from one puzzle to the next, and there’s a slight incentive not to use hints. But starting a few days ago, it’s not uncommon to finish a puzzle and see “Sudoku Complete!” without any of the following stats and the button to continue. The app becomes unresponsive, and I have to close it to continue playing. The Eternal run didn’t save the most recent progress, so I’m back at the last puzzle I solved, and the process repeats itself. Hopefully this could be fixed soon; I love Eternal mode, and this app deserves five stars!

Steppe22, Dec 08, 2020
4
Lives up to its name

I’ve tried a moderate number of Sudoku apps, and this is one of the best. The interface has some good time-savers. I especially like the ability to select multiple squares and make notes on all of them at once.The worst thing for me is the legibility of notes. I’m using an iPad Pro 12.9, so the text is as big as it’s going to be, and it’s still hard to read in some circumstances. The typeface is light (as in thin strokes) and it also seems to be gray, not black. When it’s on a white background, it’s not bad, but in focus mode, you get gray on orange, which is terrible. I can read the numbers mainly by position in that case.I also run into this bug fairly often: when I tap the hint button, the hint shows up, but if I tap the book icon for more details, nothing happens. To be sure, it works most of the time, but fails often enough to be aggravating.

Thvedt, Aug 10, 2020

Description

You’ve never played Sudoku like this. Good Sudoku turns your iOS device into an AI powered Sudoku genius whose only mission is to help you learn and love this classic game. Whether you’ve never tried Sudoku, or you play every day, Good Sudoku’s elegant layout, intelligent hint system, and busywork reducing tweaks will help you play better and have more fun. - Over 70,000 of the highest quality puzzles you’ll see anywhere - Optional tools to reduce busywork - AI powered hint support to continuously boost your skills - 3 standard modes: Good, Arcade, and Eternal - 3 Daily puzzle modes that get harder throughout the week + global leaderboards - 5 levels of difficulty - Import your own puzzles from elsewhere in Custom mode (and share them with friends!) --- We put everything we could into making the best digital Sudoku game ever released: - We wrote a puzzle generator from scratch to create over 70,000 of the highest quality puzzles you’ll see anywhere.

We spent weeks figuring out how to generate intricate and complex puzzles you won’t find in other Sudoku apps. Our hardest puzzles require wild techniques like “XYZ Wings”, “Hidden Quadrouples”, “Jellyfish”, and “Swordfish”. - Most people don’t know this but Sudoku puzzles are actually generated by programatic Sudoku solvers. The fastest way to know how hard your puzzle is, or if it’s valid, is to write a solver that knows all the strategies that can try it. With Good Sudoku, we run our solver as you are playing, so if you get stuck, it can detect what you know by looking at your answers and your notes, and then help you find the next technique you need to solve the puzzle. - Most Sudoku games classify difficulty into vague Easy, Medium, and Hard difficulties — But what do these difficulties mean? Typically they refer to the kinds of solving techniques that are required to solve a given puzzle without resorting to guess-and-check. In Good Sudoku we aren’t vague about it at all. We lay out exactly which techniques are required for each difficulty level. Good Sudoku allows you to practice them individually outside of puzzles, and keeps track of which ones you’ve learned! - When we first got interested in Sudoku we noticed that a lot of players spend most of their time looking at the board and counting. On easy puzzles, this counting serves as a way to increase the difficulty by making the puzzle take longer. We know some sudoku players love the counting but we found it a bit tedious and designed some tools to alleviate the busywork. At first these tools might feel a bit like cheating, but once your mind is freed up from counting you’ll have space to see the much deeper more fascinating side of Sudoku: all of the beautiful technique structures. Freed from the burden of busywork Sudoku becomes one of the best search-style games we’ve ever played. More fun than word-searches and solitaire, high-level Sudoku is a real treat — and with Good Sudoku and a little practice, anyone can learn it! - We noticed when looking at other Sudoku apps although there are often daily puzzle modes, those modes never include global leaderboards. Weird! Good Sudoku remedies this problem! - We wanted to make the best Sudoku out there, and while we’re proud of our puzzles, we recognize that puzzles come from all places. That’s why we built a quick and easy custom puzzle mode into Good Sudoku, so if you have a paper puzzle that you’re stuck on, or you’re trying some wild variant (Like the Miracle Sudoku!) it’s easy to put it into the game, play it, and share it with your friends. If the puzzle follows standard Sudoku rules, our hint system will even help you get unstuck! We truly hope Good Sudoku can introduce you to, or deepen your love for this great game. -Zach and Jack

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