# Stress Free Sudoku Game Book! — 200,000 Puzzles, Easy-Expert > Free Sudoku game with 200,000 puzzles and no timers. (iPhone/iPad app by Boy Howdy Technology LLC.) - Source: https://appshunter.io/ios/app/stress-free-sudoku-game-book/id640720527 (this page in markdown: same URL + `.md`) - Developer: [Boy Howdy Technology LLC](https://appshunter.io/developer/293910537) - Category: Games, Education, Strategy, Trivia - Price: Free - Rating: 4.80/5 from 10,367 App Store ratings · 226 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 55 MB - Languages: American English - Released: 2013-05-10 - Data updated: 2026-09-02 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/stress-free-sudoku-game-book/id640720527/reviews.md ## What is Stress Free Sudoku Game Book!? • 100% FREE! DOWNLOAD NOW AND START HAVING FUN! :-) "This is by far the best Soduku App. The highlighting of the numbers is fantastic." --DrMike94 "So many levels!!! This game is brilliant, I'm addicted. I really recommend it for people who love sudoku!" --B3thB3th15 BEST SUDOKU EVER: "I have played on a number of games and this is by far the BEST one I have ever truly enjoyed! NO timers, NO penalties for bumping the wrong number. Just plain ol relaxation solving a game I really enjoy. Thanks for taking the complications out of this game." --AuntMadre • 200,000 Sudoku Puzzles, with 5 difficulty levels! • No timers at all! Just relax and have fun! • Full UNDO support! • 10,000 Very Easy Sudokus! • 40,000 Easy Sudokus! • 50,000 Medium Sudokus! • 50,000 Hard Sudokus! • 50,000 Genius Sudokus! • Beautiful, easy to read numbers! • Fast and intuitive dual-keypad input system - just tap a cell and easily mark your answer or pencil marks! • Pencil marks are auto-erased as you enter answers! (Can be turned off if you wish) • Horizontal and Vertical guidelines make it easy to look at your current row and column (Can be turned off if you wish) • Auto-highlight other cells with the same number as the currently selected cell • Auto-highlight cells that have a visible conflict • Auto-highlight pencil marks that have a visible conflict (All of these highlights can be disabled if you wish) • Hint function if you get stuck! • Check your work function, to spot any problems you've got if you're unsure! • Your progress is automatically saved, all the time, so go ahead and take that call or jump out to any other apps - you can come back and pick up playing right where you left off! • Sounds can be disabled if you want a quiet game • You can even listen to your own music while you play Thanks for playing! Come see us at http://boyhowdytechnology.com ## Key features - 200,000 Sudoku puzzles - 5 difficulty levels - No timers or penalties - Full undo support - Highlighting features - Automatic progress saving - Hint and check functions ## What do users think of Stress Free Sudoku Game Book!? Overall sentiment: positive **Pros** - 🚀 Great for brain exercise - 👍 User-friendly interface - 👍 Variety of difficulty levels - 👍 Helpful features like error checking - 👍 No time constraints or ads **Cons** - 🐛 Occasional issues with higher difficulty levels - 💡 Could use more customization options **Commonly reported bugs** - Incorrect number placement on higher levels - App crashes after recent OS update **Most requested features** - Dark mode option - Ability to create custom puzzles - Leaderboard or progress tracking ## Recent user reviews (10 of 226) All indexed reviews: https://appshunter.io/ios/app/stress-free-sudoku-game-book/id640720527/reviews.md ### 5/5 — I love Boy Howdy Sudoku *2026-07-27, version 1.38* I’ve just discovered Sudoku and have tried a few different variations and Boy Howdy’s is by far the best. I love how easily you can leave guesses in a box. Now I must get back to the game! ### 5/5 — No time clock = stress free *2026-07-12, version 1.38* My favorite sudoku app because there’s no time clock. Truly a lovely way to unwind. ### 5/5 — Sudoku *2026-06-06, version 1.37* Calms me down and offers space from the craziness of the world. ### 5/5 — Boy Howdy sudoku *2026-05-03, version 1.36* This phone app is great! It allows for choice of difficulty to allow for skill level. It highlights the selected number by color highlighting all of chosen number on the board. The “menu” offers several game modes: difficulty, errors, hints, etc. I use it daily! Two keyboards eliminate the need to continuously toggle keyboard settings! 😊 ### 5/5 — Great app *2026-04-26, version 1.36* I tried several apps after the one I had for several years is suddenly no longer available. This was the only one I found that was similar. I like having the double set of numbers. The only thing is I wish that there was more contrast with the completed numbers. ### 5/5 — LOVE SUDOKU *2026-04-17, version 1.36* First thing in the morning ### 5/5 — My Go-To *2026-01-28, version 1.34* This one’s my go-to for time killing. No WIFI or LTE needed! ### 3/5 — Two opportunities *2026-01-17, version 1.34* Gave this two opportunities. Loved it because the ads were almost nonexistent. The problem is I run into boards where there was no path to complete board. Ignored it a few times but very aggravating after putting in the time. ### 1/5 — Not user friendly *2026-01-15, version 1.34* Multiple areas that are not done well. 1-Using the pencil is clumsy. 2- you can’t select a number and place it. You have to select a square the select a number place it. That’s two moves each time. Instead of one 3- completed squares is not highlighted so you can see what you have placed versus the initial numbers ### 4/5 — Numbers are so small for the fingers *2025-11-19, version 1.32* It could be better if you can enlarge the numbers and narrow the pencil. ## Frequently asked questions about Stress Free Sudoku Game Book! ### What is this app? This app is a free Sudoku game offering over 200,000 puzzles. It is designed for a relaxing experience with no timers or penalties for incorrect moves. You can enjoy solving puzzles at your own pace. ### What are the key features of this Sudoku game? Key features include a vast library of 200,000 puzzles across five difficulty levels, no timers, full undo support, and helpful highlighting options for numbers and conflicts. It also offers a hint function and automatic progress saving. ### Is this app free to play? Yes, the app is 100% free to download and play. While the description mentions 'free with in-app purchases', the core gameplay and all puzzles are accessible without cost. Any in-app purchases would be optional enhancements. ### What are the different difficulty levels available? The app provides five distinct difficulty levels: Very Easy, Easy, Medium, Hard, and Genius. This allows players of all skill levels, from beginners to experienced Sudoku enthusiasts, to find a suitable challenge. ### Can I play this game on different devices? The provided description does not specify compatibility with different operating systems (like iOS or Android) or device types. However, it does mention that progress is automatically saved, allowing you to switch between apps and return to your game. ## Version history (last 5 releases) ### 1.38 — 2026-06-10 • Updated for the latest iOS Thanks for playing! Search for "Boy Howdy Technology" to see all our free games! ### 1.37 — 2026-05-29 • Updated for the latest iOS Thanks for playing! Search for "Boy Howdy Technology" to see all our free games! ### 1.36 — 2026-02-05 • Updated for the latest iOS Thanks for playing! Search for "Boy Howdy Technology" to see all our free games! ### 1.35 — 2026-01-30 • Updated for the latest iOS Thanks for playing! Search for "Boy Howdy Technology" to see all our free games! ### 1.34 — 2026-01-06 • Updated for the latest iOS Thanks for playing! Search for "Boy Howdy Technology" to see all our free games! ## Apps similar to Stress Free Sudoku Game Book! | App | Rating | Price | Category | | --- | --- | --- | --- | | [Trivia Star: Trivia Games Quiz](https://appshunter.io/ios/app/trivia-star-trivia-games-quiz/id1508418993) | 4.9 (313,953) | Free | Games | | [TRIVIA 360: Quiz Game](https://appshunter.io/ios/app/trivia-360-quiz-game/id1131021462) | 4.6 (10,399) | Free | Games | | [Millionaire Quiz: Trivia Game](https://appshunter.io/ios/app/millionaire-quiz-trivia-game/id1418794453) | 4.5 (49,526) | Free | Games | | [QuizzLand. 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Trivia TV Game Show](https://appshunter.io/ios/app/jeopardy-trivia-tv-game-show/id1096884447) | 4.3 (87,536) | Free | Games | ## More apps by Boy Howdy Technology LLC - [Jewel Beach](https://appshunter.io/ios/app/jewel-beach/id382524862) - [Bubble Jewels™](https://appshunter.io/ios/app/bubble-jewels/id407262916) - [Word Jewels® Classic](https://appshunter.io/ios/app/word-jewels-classic/id433238748) - [Word Jewels® Classic XL](https://appshunter.io/ios/app/word-jewels-classic-xl/id437516617) - [Stress Free Hangman 44k](https://appshunter.io/ios/app/stress-free-hangman-44k/id492731157) - [Poker Jewels™ Las Vegas Tycoon](https://appshunter.io/ios/app/poker-jewels-las-vegas-tycoon/id505578745) All apps by Boy Howdy Technology LLC: https://appshunter.io/developer/293910537 ## Related topics [easy sudoku](https://appshunter.io/ios/topics/easy-sudoku) · [expert sudoku book stress free](https://appshunter.io/ios/topics/expert-sudoku-book-stress-free) · [kudos sudoku](https://appshunter.io/ios/topics/kudos-sudoku) · [boy howdy](https://appshunter.io/ios/topics/boy-howdy) · [free sudoku games](https://appshunter.io/ios/topics/free-sudoku-games) · [enjoy sudoku](https://appshunter.io/ios/topics/enjoy-sudoku) --- *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 2026-09-02.*