# Big Bad Sudoku Book — user reviews > 304 indexed App Store user reviews of Big Bad Sudoku Book by Bad Weasel, LLC, rated 4.40/5 from 1,539 ratings. - Source: https://appshunter.io/ios/app/big-bad-sudoku-book/id364907966/reviews - App overview in markdown: https://appshunter.io/ios/app/big-bad-sudoku-book/id364907966.md - Rating breakdown: 5★ 991 · 4★ 332 · 3★ 122 · 2★ 48 · 1★ 46 ## What do users think of Big Bad Sudoku Book? Overall sentiment: positive **Pros** - ⭐ Excellent Sudoku game - 👍 Clear and easy-to-use interface - 🧠 Keeps the mind active - 🕰️ Great time-passer - 🔢 Variety of difficulty levels **Cons** - 🐛 Compatibility issues with newer iOS versions - 💤 Slow performance, especially with ads - 📢 Intrusive ads in paid version - 🤏 Small number pad and buttons **Commonly reported bugs** - App crashes when trying to start a new game - Scores not saving properly - Pencil marks not working as expected **Most requested features** - Update app to support latest iOS versions - Add more puzzle books/levels - Improve performance and reduce ads - Enlarge number pad and buttons ## Newest reviews (13 of 304) ### 3/5 — Wish it would be updated *2021-04-25, version 3.2* This was my favorite Sudoku app. I really wish the developers would update it for the new iOS so I could play it again. ### 4/5 — Update *2018-07-15, version 3.2* When are you going to update the game so it works with iso 11. I love the game. I have it on my iphone now but would like to play on the iPad. It keeps asking me that it needs an update ### 4/5 — Compatibility for IOS 11 *2018-03-12, version 3.2* Dear Developer, Writing this review — not sure how else to advise you — to update the app so it becomes compatible for IOS 11. I need my daily dose of Sudoku to sharpen my mind and I would rather not download some other app. Which clearly states how much I love your app! 😊 But please update it soon! Thanks! Mike ### 3/5 — Great *2018-02-10, version 3.2* I love this app! I'm totally bummed it doesn't work with iOS 11.2 !! ### 4/5 — Update please! *2017-12-21, version 3.2* I love this game but now it needs to be updated for the iSO 11 before I can play again! ### 3/5 — Love this app!! *2017-11-13, version 3.2* I absolutely love this app; However, I can’t use it because it saying that the developer has to update it to be used with iOS 11. 😕 I would have given it 5 stars if I were still able to use it. ### 3/5 — Any updates? *2017-10-23, version 3.2* My favourite sudoku app, however not available to iOS 11. ### 3/5 — Miss it *2017-10-22, version 3.2* Have loved this app since I got it a few years ago; however it won’t work with IOS 11. Miss this game! ### 3/5 — Not able to play *2017-10-16, version 3.2* Why can’t I play sudoku on IOS 11 ### 5/5 — Miss my Sudoku 😔 *2017-10-10, version 3.2* Please fix this so it can work with 11 - ### 5/5 — Mise à jour iOS 11.0.2 *2017-10-08, version 3.2* Bonjour, J’utilise votre jeu big bad sudoku book 3. Avez vu prévu une mise à jour sous ios 11.0.2 ? Je l’espère 😄. Cordialement Virginie ### 2/5 — Good game, but it requires an upgrade. Won't work on iOS 11. *2017-10-07, version 3.2* Great game, but the touch controls could be more accurate and efficient. For example, I'd like a way to quickly mark a set of squares with the same number (either entered or notes). Also the scoring is weird. You can get a higher score by guessing than by reasoning it out. I generally don't pay attention to the scores. ### 5/5 — Update *2017-10-06, version 3.2* Please update for IOS 11 ## Most critical reviews (10 lowest-rated) ### 1/5 — Big Book *2018-03-19, version 3.2* Useless. Update please. Wasted my money on this one ### 1/5 — Update needed *2018-02-24, version 3.2* Developer needs to provide an update to work with iOS 11. ### 1/5 — Needs an update! *2018-02-11, version 3.2* This a very old app. I can no longer play because it doesn’t work with my operating system. Bad Weasle! ### 1/5 — No longer works with iOS 11 *2018-01-09, version 3.2* Used to be my go to Sudoku app, but the developer has yet to update the app to support iOS 11 so I can’t even open the app anymore. Avoid downloading until it’s fixed. ### 1/5 — Lovely *2017-10-20, version 3.2* Updated review! This no longer works! Dev team? Please update to iOS 11 compatibility?! Will have to delete :-( So down from 5 to 1 star. Pity... This is what I wrote pre recent iOS update: If you like sudoku then this is ideal. I've checked most of the other sudoku apps and this is definitely my favourite. I don't like the scoring but I don't care so much about that. If you do care about scores it's easy to cheat once you work out the system. So it makes the leader board deceptive. Other than that it's pretty much perfect ### 1/5 — No IOS 11 support *2017-10-14, version 3.2* No longer runs, not updated in 4 years. ### 1/5 — Doesn’t support iOS 11 *2017-10-10, version 3.2* Developer needs to upgrade this app. ### 1/5 — iOS 11 *2017-10-06, version 3.2* Sadly, no longer work on iOS 11 ### 1/5 — Overdue for an update *2017-08-12, version 3.2* I'll miss this game if it goes away next month. Hope they'll rebuild it for 64-bit before iOS 11 makes it obsolete. I'll revise my rating iff this happens. ### 1/5 — Buggy *2016-12-18, version 3.2* Options won't stay. I go in to change them, but they do not remain Changed. ## Most praised reviews (10 highest-rated) ### 5/5 — Please update for iOS *2025-07-30, version 3.2* I loved this game. ❤️❤️❤️Upgraded my phone from 8 to 15 and now I have lost the game app because my new iPhone has a newer version iOS and this game didn’t transfer to my new phone. 💔😟 Now, I regret upgrading my phone. Please update your app to work on the newer iOS please. ### 5/5 — Best Sudoku App Ever *2023-05-12, version 3.2* I just wish this would work on my new iPads. This App really was the best ever. RIP Weasel ### 5/5 — Please upgrade *2019-03-06, version 3.2* Love your version of sudoku!!! I think your UI is the best, please update this version to work with the lastest IOS. ### 5/5 — update please *2019-02-01, version 3.2* great app，can you update it ### 5/5 — Please update! *2018-01-21, version 3.2* Love it, very entertaining. ### 5/5 — Love it, But .... *2018-01-12, version 3.2* Please update this app to work with ios11 ### 5/5 — Love it and miss it! *2018-01-08, version 3.2* Please update!! ### 5/5 — Disgusted *2018-01-07, version 3.2* I am thoroughly disgusted that I updated my iPad and now I can’t play my favorite game!!!! Fix it! ### 5/5 — Sudoku *2017-10-26, version 3.2* Nécessite une mise à jour pour iOS 11 Merci ### 5/5 — Please update for IOS 11! *2017-10-13, version 3.2* I’ve been playing this game almost daily for several years now and have enjoyed every bit of it. Big problem now though! It will not run on my iPad or iPhone now that I’ve updated to IOS 11. Please take the time to update it soon. Your efforts won’t go unappreciated. --- *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 2026-08-25.*