# Good Sudoku by Zach Gage — user reviews > 493 indexed App Store user reviews of Good Sudoku by Zach Gage by Zach Gage, rated 4.20/5 from 1,322 ratings. - Source: https://appshunter.io/ios/app/good-sudoku-by-zach-gage/id1489118195/reviews - App overview in markdown: https://appshunter.io/ios/app/good-sudoku-by-zach-gage/id1489118195.md - Rating breakdown: 5★ 926 · 4★ 124 · 3★ 73 · 2★ 67 · 1★ 132 ## What do users think of Good Sudoku by Zach Gage? Overall sentiment: positive **Pros** - 👍 Intuitive and clean interface - 🚀 Efficient auto-note and highlighting features - 💡 Helpful tutorials and techniques to improve Sudoku skills - 🎨 Visually appealing design - 🔥 Best Sudoku app available **Cons** - 🐛 Frequent crashes and freezes - 🔋 High battery consumption - 🤔 Confusing UI elements and navigation - 📤 Lack of cross-device sync and progress saving - 🙄 Intrusive ads that erase progress **Commonly reported bugs** - Daily classic mode scoring issues - Game Center icon overlapping the puzzle board - Inconsistent note-taking behavior - Puzzles marked as unsolvable when they are solvable - Progress not saving properly **Most requested features** - Ability to disable daily leaderboard and achievements - Option to turn off auto-note and highlighting features - Improved visibility of grid lines and notes - Redo/undo functionality - Dark mode option ## Newest reviews (18 of 493) ### 3/5 — super slow loading, no offline mode *2026-08-25, version 1.0.30* love the interface of this app but the slow loading and lack of an offline play option really takes away from it. ### 3/5 — Was great TIL YOU BROKE IT *2026-08-22, version 1.0.30* This is definitely my favorite Sudoku app to play. Excellent, clean UI, great teaching tools. BUT. With the last update, offline play is completely broken, sticking on the loading screen forever. Since one of my primary play times is on log plane flights with no net… yeah, it becomes worthless. Also, scores for Classic mode are also broken, regularly giving me a score of… 1. If fixed, this would once again be a 5-star app, as it was for years. But these are both major, annoying bugs that I personally submitted bug reports on over 6 months ago. So unless and until it gets fixed, I’m docking one star per bug. ### 3/5 — Excellent Sudoku App, but No Offline Mode *2026-08-22, version 1.0.30* Good Sudoku is among the best Sudoku apps on iOS, and I was happy to pay for the full version. Unfortunately, the lack of a proper offline mode is a deal breaker. A Sudoku app, especially when paid, should be able to launch and play local puzzles without an internet connection. Online features like daily puzzles and leaderboards can understandably require internet access, but the core game shouldn’t. The app is also currently plagued by loading-screen issues, with it sometimes getting stuck indefinitely. More concerningly, it appears to no longer be actively maintained, with the last update over a year ago despite these ongoing problems. It’s a shame because the actual Sudoku experience is excellent. I’d gladly rate it higher if reliable offline support and the loading issues were fixed. ### 3/5 — Seems good if you already know Sudoku *2026-08-21, version 1.0.30* But very frustrating for someone trying to learn the game. Hints only give one piece of information (and always something I already know). Why not allow for another hint that might reveal the logic needed to find a number. ### 2/5 — Buggy *2026-08-19, version 1.0.30* Could be great. I didn’t want to believe the negative reviews but I just lost a long streak as it would be stuck on the loading screen forever whenever starting the game with the only solution being to remove and redownload the app. There are a few minor bugs with the UI too but losing all scores because it needs periodic reinstalls is a particularly frustrating issue that needs to be fixed. ### 4/5 — Loading screen frozen *2026-08-17, version 1.0.30* As many people have pointed out, the loading screen bug has no fix and is VERY annoying to deal with. I wouldn’t be so disgruntled if I could reinstall and have all of my stats and progress saved. Everything else about this app is great and I love it a lot, hence why I’m still using it regularly, but this bug is making me want to look for an alternative app. ### 2/5 — Disappointing *2026-08-15, version 1.0.30* I purchased this app because I grew tired of watching endless adverts on the “free” sudoku app I was using. Although I enjoy the functionality of this app it frequently fails to launch, which leaves me with no option but to delete and reinstall. Then I lose all of my progress and statistics. Not acceptable for a paid app. ### 2/5 — please see this *2026-08-13, version 1.0.30* after paying for premium i’ve been experiencing issues with the game such as leaving me waiting on a loading screen or not loading anything in general. I thought i finally found my fav sudoku app please don’t make me chance my mind !! ### 4/5 — One major flaw *2026-08-07, version 1.0.30* I’ve completed over 140 pro and over 100 impossible puzzles. So far, I have found 3 pro-level puzzles that violate the Sudoku uniqueness rule. The solutions to these 3 puzzles have one or more “unique” or “avoidable” rectangles…that aren’t avoidable (since they are in the solution). Attempted to leave feedback within the app, but haven’t heard from the developer. ### 3/5 — Good But… *2026-08-04, version 1.0.30* The lack of demarcation around the cells and highlighting the pencil marks rather than the cell itself makes it impossible for me to correctly identify in which cell the pencil mark is located. For pity’s sake - highlight the containing cell, not the pencil mark. And put lines between the cells. ### 4/5 — Offline mode *2026-07-30, version 1.0.30* Please fix offline mode. It hangs indefinitely if it can’t connect to the Apple game network. ### 2/5 — Do not understand *2026-07-30, version 1.0.30* Not good. I have no idea how to load a new game. I paid my one time fee for good Sudoku and do not know anything about how to initiate a game. Can I only play one a day? Can I play an advanced game? Nor do I know what the three vertical bars are for on the left side. No instruction set or definitions. Hints? Do not want them. But no idea how to get them. Game is one time $4.99, but do not know if this means. NADA, NO INSTRUCTION. NO CLUES. NO CHOICES, NO GAME AFTER THE FIRST. ### 2/5 — Update urgently. Forever loading after closing the app. *2026-07-23* This has been my favorite app for years now but it has stopped work on my phone recently. It's forever stuck on the loading screen when I try and open it. It only works again when I re install it. Please update the app and fix this. ### 4/5 — BS “hints” *2026-07-23, version 1.0.30* So far the app is great. 1-2 ads after each game is fair. What’s irritating is clicking on hint only to be shown a “naked pair” that I’ve already seen and eliminated the appropriate numbers for. Like, just say theres no hint to give. ### 4/5 — Would be ***** if only… *2026-07-19, version 1.0.30* Great tools for solving puzzles. I have just one wish which is keeping me from giving it 5 stars - I wish it supported “Number First” input. ### 4/5 — app not opening *2026-07-03* I love this game, but it has been 4 days that I haven’t been able to open it. It just keeps loading. ### 4/5 — Problème d’initialization *2026-06-29* Quand je relance l’app après une première utilisation, l’app boucle a l’initialization, Je dois la supprimer et la recharger pour continuer à l’utiliser. ### 2/5 — Shouldn’t Require Internet *2026-06-25, version 1.0.30* Great Sudoku app, can’t use it offline. That’s annoying. ## Most critical reviews (10 lowest-rated) ### 1/5 — Internet required? *2026-08-22, version 1.0.30* Can’t play this at the cottage anymore where I have no internet. This app is essentially dead. ### 1/5 — Gets stuck on ‘loading’, unplayable sadly *2026-08-08, version 1.0.30* I’ve loved this app for such a long time and hate using any other, and have paid for it multiple times. But it literally doesn’t work any more - it’s impossible to open any of the technique sections. I’ve reinstalled the app/restarted my phone countless times which fixes the issue for opening games, but even a whole fresh OS install (for other purposes lol) hasn’t worked for the techniques - I simply cannot open the 2 string kite section; it sticks on loading permanently. Extremely sad to see this app die. ### 1/5 — Black screen of death… *2026-08-03, version 1.0.30* I know internet connection is required, and game center required for daily puzzles which are reasons enough to delete, but on top of that it's WAY TOO BUGGY! It is once again at the black "loading" screen that never goes away (despite solid/fast internet?!?!) I really want to like this game (in spite of the internet/game center requirements), but it's just too problematic! I've reloaded this several times. Works for a few days, then I go to open and it's back at the black loading screen. Most often in the improve section, but frequently when loading a game. Once it starts, can't play without deleting / reinstalling. Deleted ### 1/5 — Gone Downhill *2026-07-29, version 1.0.30* This used to be one of my favourite games but now it’s so irritating. I’m having to reinstall it constantly because of it hanging on opening. Please fix this!!! ### 1/5 — endless loading screen *2026-07-14, version 1.0.30* why would i not be able to play offline when i purchased full access? ### 1/5 — Doesn’t load *2026-06-22, version 1.0.30* I love sudoku, do it daily. I don’t love this app as i can’t work out how to play without the tips and auto entries that just make my brain redundant. I might not have correctly grasped why this is presented as the benefit of the app. I paid for full version but app just gets stuck in loading page every time I open it. ### 1/5 — Simply doesn't load *2026-06-20, version 1.0.30* The app just gets stuck on loading and won't open, wouldn't bother reviewing if I hadn't paid for it. ### 1/5 — Great when it works but app constantly fails to open *2026-05-30, version 1.0.30* The app is great when it works however almost every time it gets stuck on the loading screen. I have to delete and reinstall the app every time just to get it to open ### 1/5 — Drains battery *2026-05-27, version 1.0.30* On my Mac (Apple M4 chip) the game consumes over 200% CPU continually. The Mac gets hot. And it I quit the app it STILL consumes over 200%. Need to force exit to finally stop it. It’s a shame because on iOS it’s a great app. ### 1/5 — Daily results don’t work *2026-05-26, version 1.0.30* I used to love this app, but now the daily results don’t work. On the good and arcade ones you can win medals but it doesn’t show on your medal count. And the classic never shows. It also won’t let me get my last achievement. Please fix this! ## Most praised reviews (10 highest-rated) ### 5/5 — Initial observations *2026-08-23, version 1.0.30* I was looking for a sudoku game without ads. I would say that this is a bit more sophisticated than what I was using before. I am a beginner level and frankly did not realize there’s all kinds of different strategies which this app introduces you too. I like the fact that I can seamlessly play games between my iPad and phone. I’m an older adult looking for a little brain exercise and find sudoku very engaging. I don’t have any suggestions right now. Keep up the good work and I’m glad I found this sudoku app. Just a word for anyone after you download it go through the learning exercises. And gain introduction if you’ve never done this before. ### 5/5 — The App the Taught me Sudoku *2026-08-10, version 1.0.30* I was never much for puzzle games but I always liked the allure of being able to solve sudoku puzzles. After much time and specifically this app helping me learn to visualize the game better I'm now half decent! ### 5/5 — Best sudoku app! *2026-07-21, version 1.0.30* Teaches techniques!! I’ve been tryna learn techniques to actually get better and improve note taking etc and this is the absolute best ### 5/5 — Perfect *2026-07-18* Best Sudoku app! Please enable offline mode to play in airplane ### 5/5 — I love this up sm but the loading screen issue is annoying *2026-07-18, version 1.0.30* This app? deserves 5/5. Its soo goooodd. Customizable, smart, easy to use, makes sudoku more fun. Its genuinely ruined any other apps, so yeah. All I hope for is for the developer to fix the loading screen issue. As its frustrating and requires me to delete it and redownload it sometimes. making me lose my progress… ### 5/5 — Excellent Learning Tool *2026-06-30, version 1.0.30* Nothing but good things to say about this app. It walks you gently through solving techniques in order of difficulty. Features to appreciate: auto-candidates, highlighting of individual candidate numbers (i.e., have it show all 1’s), easy to understand explanations, and revert to last error-free state. Ad-free cost is reasonable. ### 5/5 — Great App, but buggy *2026-05-06, version 1.0.30* I have tried over 20 Apps and this the best for challenging games. I agree the hints are useful and understandable. The app does a lot. I wish I didn’t have so much trouble with it unexpectedly leaving not mode. ### 5/5 — Simply Wonderful *2026-05-04, version 1.0.30* I haven't played sudoku in years but this game came as a recommendation; so I decided to give it a try and fell back in love with the game. It has a very simple and straightforward layout while still being beautiful at the same time. The polite "excuse the ad" was what made me want to buy the full version. Thank you for putting time into this. It is much appreciated. ### 5/5 — Brilliant app, but… *2026-04-29, version 1.0.30* In my opinion, which matters to me, this is the best sudoku app available. However, when it gets to the “loading” and goes no further you have to delete the app and reinstall. This is random and there is no fix I can find. It is something I grudgingly accept. PLEASE FIX IT MR GAGE. PLEASE. ### 5/5 — I love the app but… *2026-04-24, version 1.0.30* Great app! I love the music and the personal way it “speaks” to the user. The music and the color schemes are nice too. My only gripe is that 8 out of 10 times trying to start the app it gets stuck on the loading screen. Sometimes killing the app helps. Or restarting my phone. But that doesn’t work every time so I end up just waiting an hour or two. But sometimes that doesn’t help either. A bit frustrating since I paid for the full version of the app. --- *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 2026-09-01.*