Last updated on January 29th, 2026 at 01:41 am
Stress Free Sudoku Game Book! – Education Game Review
Stress Free Sudoku Game Book! is a Education/Strategy/Trivia game from Boy Howdy Technology LLC, first launched in 10th May 2013.
It’s rated 4+ and currently has 9,909+ ratings on the App Store.
What Makes Stress Free Sudoku Game Book! Stand Out
• 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
This Education game offers engaging gameplay and regular updates for mobile players.
Player Feedback
As a newer release, Stress Free Sudoku Game Book! is building its player community. Early feedback suggests .
Recent Updates & Development
Latest Update: 6th January 2026
Recent improvements include:
• Updated for the latest iOS
Thanks for playing!
Search for "Boy Howdy Technology" to see all our free games!
Download & Availability
Stress Free Sudoku Game Book! is available through the official App Store for iOS devices.
Get Stress Free Sudoku Game Book! on App Store
Requirements: Requires iPhone 5s / iPad Air / iPad Air (Cellular) / iPad Mini 2 (Retina) / iPad Mini 2 (Retina, Cellular) / iPhone 6 / iPhone 6 Plus / iPad Air 2 / iPad Air 2 (Cellular) / iPad Mini 3 or later.
Compatible with iPhone and iPad devices.
Player Experience Highlights
Community Insight:
This is by far the best Soduku App. The highlighting of the numbers is fantastic.
Love his app. The game works great. The levels are correctly labeled and the "pencil" mark option is very helpful. It's a really good and straight forward sudoko game.
We're new to playing Sudoku, and this game is magical. After we get some filled in, we ask it to check our work for errors. Love seeing the "Okey Dokey your answers looks good so far". Also love seeing a "red" number for obvious conflicts. We're 70 years young, playing to keep our brain stimulated. Highly recommend as seasoned players can play more difficult levels – we're starting with the Simple (for Dummies) level and love it.
We have played on a number of games and this is by far the BEST one we have ever truly enjoyed! NO timers, NO penalties for bumping the wrong number. Just plain ol relaxation solving a game we really enjoy. Thanks for taking the complications out of this game.
We played over 500 games with 2 different iPhones! Love it.
Love challenges and this app does it very well. We use it endlessly and love the fun. :).
The best and easiest to work with.
This app is the easiest sudoku app we have found. It has so many games in different skills. We play daily.
Downloaded this game last week. We'd never played Sudoku before and we haven't missed a day of playing since. The instructions are easy to understand. It gives you hint, erase, check your work, and optional difficultly levels. The only thing we don't like so far is that we can't change from…what is it?…side view to lengthwise on our iPad, we prefer the lengthwise format that we have on our iPhone. It's more open and the grid isn't crammed up into the corner of the screen. Loving the App for learning and progressing with Sudoku.
We are really enjoying this app. We love the way the level of difficulty lncreases.
We enjoy this version the most and we have tried several.
Easy to use, great features and options, many skill level choices. This is our favorite of the many sudoku apps we tried prior to it. It is the only one we use now. Great app.
We love our Boy Howdy games and this is one of our favorites. We play everyday and love the challenge.
We have tried many versions of Sudoku but this is by far the best version we have found.
We've tried a lot of free sudoku apps. Look no further, this one is the best.
There are several Sudoko games available but this is the best one. Easy to use and has all the options to set placeholders with any number, check your work, multiple levels. No need to look further.
Really like playing this! Great variety and lots of puzzles.
Great game, soooo many puzzles and options; hint, check our work, 4 different difficulty levels. Love it.
Very well thought out process in development.
Really like it, we also like the different levels.
If you like sudoku then you like this app.
We love the game. By far, the best we have used. BUT, the game freezes on our new iPad mini and won't recognize anything from buttons. Closing game and re-opening seems to work most of the time. Would have been a 5 other than this.
Lots of fun and brain building power.
This is a great game! The difficulty levels are well marked and helps with how our cognitive function is that day.
Love Sudoku. Howdy makes it so easy to get different levels all in one place. Try it today.
Really love this app such fun, love having the ability to check for accuracy so fast. Our favorite with out a doubt.
This app has many choices. We really enjoy playing with it.
Have been playing this game for a long time. Now it freezes up after a couple of moves. Don't know what the problem is but we are thinking of deleting game.
Keeps us on our toes and also helps when our brain is overactive.
Bottom line is, the games are often incorrect! As in, there is an opening in a block for, let's say, a 5, but the line and row the spot is in already have a 5 in them. So, clearly one of those is wrong, but the game has given them the green light! (It is supposed to turn the number red if you place it in the wrong spot.) Typically you don't discover this until you're halfway done with the game, so it's really just been a huge waste of time to even fill any part of that puzzle, as there's no way possible to solve the entire thing. Ridiculous. The colors, design, Bella and whistles are all negotiable. Having only one numeral per row, line and block, is not. We've deleted this from our phone.
So addictive, can't stop playing.
Easy to use, great clear BIG numbers.
We love this app! The size of the boxes is perfect. It is a stress-free activity that we enjoy so much.
Super to find such a great game for free!!! We love it.
We can't wait in the morning to grab our iPad and put our nose in another puzzle! Thanks.
We are so glad we found this app. We've been through several other sudoku games and they just don't compare to this one. We enjoy playing and we don't likes being timed –this one don't have a timer. If we accidentally hit the wrong letter, we don't like having the game score against us — this one don't. We like playing just to play and relax our mind and this one allows that. Thank you.
Love the candidates! But when you erase, it should revert to the just previous entry, not completely delete, forcing you to rebuild. Annoying, esp. If it was an inadvertent tap of an adjoining square.
Easy to use, fun, and fantastic.
This has become one of our favorite games. The interface is easy & straight forward. We started out as a beginner and now we're on the "evil" level. By the way, we love the way it highlights the rows/columns and the selected values.
Love it! Notes remind us of paper and pencil. Awesome game.
Great way to give your brain a workout.
We play it all the time, we are 69, keep the mind fresh.
We have several Sudoku games on our iPad, but this one is the best. Simple, clean interface with just the right mix of features. The latest update got rid of a relatively minor problem that used to annoy us. In our book, it's ideal. Thank you Boy Howdy.
We are fricken mad at this app. The number is red when it is not on the SAME LINE, NOT VERTICAL, OR NOT EVEN HORIZONTAL!!!!!!!!!!! LIKE WHY IS IT RED?????? We DO NOT GET THIS FRICKEN APP. BUT STILL PRETTY GOOD. Buy it.
Great and you can play on many levels of skill. Not bombarded with pay to play again which is all to common these days.
Love the way the app works letting you figure the game. Compared to others, one more popular, it is far better. The only way to make it better would be to add a timer and increase the number key size to make it easier to touch the correct key. Again great app, we'd recommend it to anyone.
Works well and very similar to paper pencil. We'd love to see if we're improving. We wish it had a timer and held a list of our top ten times.
We enjoyed this game for a couple of weeks, but then all the ads started having blinking and motion, and were too distracting for us to concentrate on the puzzles.
Gave this two opportunities. Loved it because the ads were almost nonexistent. The problem is we run into boards where there was no path to complete board. Ignored it a few times but very aggravating after putting in the time.
This is such an enjoyable version of Sudoku! We love it! No Ads! Lots of options for as much help as you need or no help at all, your choice.
User feedback from Apple App Store
App Details
- Version: 1.34
- Size: 55.26 MB
- iOS: 12.0 or later
- Languages: EN
- Content Advisory:
- Developer: Boy Howdy Technology LLC
Last updated: 6th January 2026 | Genre: Education, Strategy | Developer: Boy Howdy Technology LLC