# Expert Sudoku Book Stress Free — user reviews > 62 indexed App Store user reviews of Expert Sudoku Book Stress Free by Boy Howdy Technology LLC, rated 4.80/5 from 1,675 ratings. - Source: https://appshunter.io/ios/app/expert-sudoku-book-stress-free/id1056202953/reviews - App overview in markdown: https://appshunter.io/ios/app/expert-sudoku-book-stress-free/id1056202953.md - Rating breakdown: 5★ 1,370 · 4★ 229 · 3★ 54 · 2★ 8 · 1★ 14 ## What do users think of Expert Sudoku Book Stress Free? Overall sentiment: positive **Pros** - 👍 Awesome, challenging, great support - 🧠 Keeps the brain active - 🎮 Fun and engaging game - 🧩 Variety of game modes and layouts - 🤖 Puzzles challenging even for experts **Cons** - 🐛 Occasional glitches and bugs - 🤖 Puzzles too easy at highest difficulty - 🔕 Lack of customization options - 🔕 Missing features like statistics and timer **Commonly reported bugs** - Numbers jumping to wrong squares - App pausing unexpectedly - Inability to delete app from device **Most requested features** - Add undo/redo functionality - Provide more challenging puzzles - Include game statistics and progress tracking - Allow customization of UI elements ## Newest reviews (14 of 62) ### 5/5 — Mel *2024-03-29, version 1.31* I’m 80+ and this game really helps to keep the old grey matter on it’s toes. ### 5/5 — Samurai sudoku *2024-02-28, version 1.30* Love this game ### 5/5 — Love this! *2024-01-18, version 1.30* Been playing this game for many years and love it on so many levels - its very logical but makes you think - must be good for the brain and memory! ### 5/5 — Expert sudoku *2024-01-04, version 1.30* Simply the best on the App Store. Play this daily. Love most of Boy Howdy games but this one appeals to me most. LOVE IT - LOVE IT. Keep the games coming! Thank you Boy Howdy ### 4/5 — Pretty good *2023-07-31, version 1.25* If you have an undo button, you should also have a redo button. If you accidentally hit the button and don’t see what changed, there’s no way to correct your mistake. Challenging games. ### 5/5 — Expert Sudoku *2023-06-06, version 1.24* Expert Sudoku is a fantastic, GREAT , INTERESTING game! Glad I have it! 👏👏👏 ### 5/5 — Too addictive *2023-01-16, version 1.22* Love this app. An excellent way to do a bit of brain jogging. ### 5/5 — The Best Yet! *2022-05-19, version 1.21* I have been trying numerous Sudoku apps recently, this is by far the best, as are other apps by Boy Howdy Technology. Well done, you’ve done a brilliant job. ### 5/5 — Not impressed. *2021-11-14, version 1.21* For all intents and purposes, this seemed a good puzzle game. However, was real disappointed for finding that, even on Genius level, the puzzles were extremely easy compared to other apps. EDIT: Want to apologize for accusations of high costs, Purchase History confirmed otherwise. ### 5/5 — So far so good *2021-04-14, version 1.20* Not been using this app for very long but it seems very user friendly! Give it a try if you like sudoku puzzles! ### 5/5 — Awesome *2021-03-04, version 1.20* Great game. Fun.& challenging! ### 4/5 — Love it, but..... *2020-11-30, version 1.20* I truly do love the game. However, there really should be some sort of game statistics available. Even something as simple as Number of games played, won, and lost. ### 5/5 — I love the samurai version of Sudoku. *2020-10-16, version 1.20* And this is the only one of the few I’ve found online. It’s a very good format. I got an immediate and personal response to a question I asked. It is very simple. Obviously the lower levels at least are meant for new players. I am enjoying it very much n ### 5/5 — Genius level *2020-10-02, version 1.19* The genius level puzzles aren’t that hard. ## Most critical reviews (10 lowest-rated) ### 1/5 — Bob *2021-08-26, version 1.21* I like the game, but it keeps pausing, makes me suspicious ### 1/5 — Adds *2020-10-08, version 1.20* Be nicer without the adds. ### 1/5 — Unhelpful *2020-05-04, version 1.17* The most challenging level of sudoku on this app involves puzzles that are unsolvable by engines. Do not recommend if you are here to improve your skills. ### 1/5 — Disappointing *2016-06-18, version 1.3* I was so excited to see an app with some of my favorite formats of Sudoku. Then I opened it. It's not symmetrical as true sudoku puzzles are. Please name it differently! Deleting now. ### 1/5 — Upseting *2016-04-29, version 1.1* Where was i supposed to put the number 3 if it is wrong in every single spot out of the nine in the square and the nine in a row ### 2/5 — Too easy *2022-12-29, version 1.22* The hardest levels are way too easy, no challenge at all. There should be option to make the numbers less bold, unless you’re visually impaired they don’t need to be that thick, and it makes it very busy. ### 2/5 — Missed Potential *2019-02-01, version 1.13* The game has the potential to be five stars. The graphics, tools provided and gameplay are very good. Even the ads are not obtrusive. Where it falls woefully short is that it provides way too many exposed numbers at the start of the game. Even at the most advanced level it is so easy as to be trivial. This is a very easily fixed problem. I hope the App designers will correct it. ### 3/5 — Hard to use app and impossible to delete *2025-09-24, version 1.36* I don’t usually leave reviews for apps I dislike, but this one will not allow me to delete from App Library, only from Home Screen. So just beware before downloading it and getting stuck with it. ### 3/5 — QoL improvement please *2024-06-20, version 1.31* I didn't play much because I didn't like having to always click a box then click a number and repeat. I would like to be able to hold that number and click on the boxes all at once. Thanks! ### 3/5 — Needs a timer *2023-09-07, version 1.28* I really miss a timer. A second feature I love but can do without is a bookmark. The sales screen also states you can turn off certain features but no option exist in settings. Other than that for a free app it’s great. The ads are unobtrusive I intend to click on one occasionally to send some funds to the developer. ## Most praised reviews (10 highest-rated) ### 5/5 — Boy Howdy Sudoku *2026-06-25, version 1.46* Boy Howdy has the best selection of Sudoku. I’ve tried lots of other brands but Boy Howdy is the best. I like that it shows the errors right away. NO ADDS is a bonus. The rest of Boy Howdy games are fun to play I’ve played other brands but I always come back to Boy Howdy. The Fit-In word puzzles are fun too ### 5/5 — Expert Sudoku Game *2026-05-10, version 1.44* This game is really fun. You can play without assistance or you can use options to mark tile squares so you can keep track. It has improved my skill at Sudoku. There is even a way to see if you have made a mistake! That takes the pressure off. There are days I just want to play and not work too hard. It’s satisfying played like that, too. ### 5/5 — Great brain game, love it. *2026-03-06, version 1.44* It’s entertaining and a challenge, love playing it!! ### 5/5 — Awesome Sudoku *2025-08-29, version 1.35* My name is Isaac and I love this gam!!!!!! ### 5/5 — Cool game. *2025-03-06, version 1.35* This is a really great game. There are several levels and everyone can find a challenge. ### 5/5 — Boy howdy *2025-02-19, version 1.33* Awesome, challenging, great support etc etc !!!! Thank you !!!! ### 5/5 — X sudoku *2024-11-06* It is quite fun, a bit different from traditional sudoku! ### 5/5 — I’m hooked. *2024-10-18, version 1.33* Really great to play. It still stumps me sometimes, but I enjoy the challenge ### 5/5 — Problem with Expert Sudoku *2024-06-18, version 1.31* I enjoy playing many of your games with Sudoku being one of my favorites. However, just in the past few days there seems be a glitch. When I am trying to put my numbers in the boxes, the numbers often will jump to a different (wrong) square which can be quite annoying. It would be great if you would check into this. Thank you for many hours of normally relaxing entertainment! ### 5/5 — Sudoku samurai *2024-04-07, version 1.31* Fantastic way to keep me concentrated. Well done. --- *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.*