New Puzzle Workshop live! Design your own custom Sudoku grids to challenge players worldwide. Enjoy a newly rebuilt UI, optimized Dark Mode, and key bug fixes!
Looking for the ultimate mental escape?
Welcome to Sudoku by Volcano—the world’s most vibrant puzzle community! From thrilling global tournaments to infinite player-created grids, your daily brain workout just got a major upgrade. Perfect for a 5-minute coffee break or hours of deep logic training, our classic and innovative puzzles offer endless fun for everyone, from beginners to grandmasters.
With 365 days of Daily Puzzles, international rankings, and endless creative challenges, your mind will always stay sharp!
◆ Why Choose Sudoku by Volcano?
We offer a premium, feature-rich experience that no other classic puzzle app can match:
• NEW! Puzzle Workshop: Step into our thriving creator community! You are no longer just a player—you are a puzzle designer. Create your own custom grids from scratch, scan them directly from a newspaper, share your masterpieces with the world, and play infinite unique puzzles crafted by global players.
• Champions Challenge & Global Leaderboards: Battle logic enthusiasts worldwide in thrilling daily competitions. Track your rank against millions of active players, win exclusive rewards, and climb to the top spot to earn your bragging rights as a true Sudoku Champion.
• Non-Stop Daily Challenges: Never miss a day of mental fitness. Log in daily to solve unique, hand-crafted puzzles, build your consecutive win streaks, and collect gorgeous monthly trophies and champion badges.
• Exclusive Hint System (Sudoku Solver): This is not just a cheat sheet! Our intelligent system teaches you advanced solving techniques step-by-step with intuitive instructions, colorful visuals, and elegant animations. Go from beginner to expert in no time.
◆ Core Game Features & Variations
Enjoy 8 tailored difficulty levels—from Very Easy to Extreme—alongside multiple ways to play:
• 10 Brain Teaser Variations: Challenge yourself with Squiggly, X-Sudoku, Color puzzles, and alternative grid layouts.
• Daily Puzzle Archive: Missed a day? Access past Daily Challenges from the archive to complete your trophy collection anytime.
• Career Statistics: Access detailed profile stats to track your logic improvement, win streaks, and best solve times.
• Beautiful Visuals: Personalize your board with stunning designs and alternative numerals, including Chinese numbers.
• Offline Mode: Enjoy your favorite mindsport anywhere, anytime—no internet connection required for official packs and saved daily grids.
◆ Smart Tools & Quality of Life
Maximize your solving efficiency while protecting your eyes during night-time play:
• Intelligent Assist: Auto-highlighting of identical numbers, automatic pencil marks, and real-time error checking.
• Standard Tools: Unlimited Undo & Redo, Double-Tap Erase, and smart drafting notes.
• Seamless Convenience: Auto-Save ensures you never lose progress when life interrupts your game. Toggle Dark Mode for a more comfortable night-time experience.
• Universal Design: Stunning high-resolution graphics optimized perfectly for both iPhone and iPad.
Download the ultimate Sudoku experience today! Wake up your brain with a fresh Daily Challenge, unleash your creativity in the Puzzle Workshop, and see where you stand on the global stage!
It relaxing and stimulates my mind. I always enjoy beating my score.
Custom feature is GREAT! But buggy
mdesigner
I use this app for it’s custom puzzle feature. I have a Sudoku paper book that I never completed. I enter the puzzles into the app because the book is worn, ripped and dog eared. After solving my 1st custom puzzle I entered 2 more and solved them too. The bug is that the app doesn’t remember that I solved the 2nd and 3rd puzzles!!! It doesn’t even remember when I used the ‘save checkpoint’ feature 1 or 2 steps before completing the puzzle!At this point I entered 6 puzzles and I deleted the 1st one. I completed the 2nd and 3rd but they still show as incomplete!Does anyone know of another iPhone app that has the option to enter custom puzzles?
Developer Response
Hi, Sorry to hear you were having problems. Since we can't reproduced the issue on our end so could you please mail us with more details at sudoku@volcantech.com if the issue comes up again. So we can look into it. Thanks!
New Bugs??
Bill M 42
I've enjoyed this app for years but habit recently been getting interface issues and crashes related to checkpoint save and restore and puzzle reset.Often when saving a checkpoint, the upper right menu (that houses the checkpoint and reset commands) becomes hidden. It still works, but isn't visible.Occasionally saving or restoring a checkpoint will terminate the application and reset the current puzzle. On restart it appears as an "in progress" puzzle but has beg fully reset to its start state.Also often the reset command does nothing leaving the puzzle as is.When it works this is a great sudoku app.
simple game app
A01x
I’ve tried a bunch of sudoku apps and found this one to be OK.Pros: dark mode. No full screen or overly interruptive ads (in the free version). Nice set of options to control effects, input method, etc. I’m glad to see the “digit first” method is an option. Cons: it doesn't remember the dark mode setting. When you reopen the app it defaults back to light mode.No option to immediately flag wrong numbers....not a “con” per se but a suggested improvement: “dark mode” could have less contrast. = even less strain for the eyes. Also, PLEASE consider putting a “dark mode” filter / tinted overlay on the ad area. Stark white or brightly colored flashing ads kind of defeat the purpose....
【NEW! Puzzle Workshop】
Our biggest community feature is officially live! You are no longer just a player—you are a puzzle designer. Create your own custom grids from scratch, share your masterpieces with the world, and challenge millions of global players!
【Rebuilt UI & Interface】
We have completely overhauled parts of our core UI. Enjoy a sleeker visual layout and smoother touch controls, allowing you to focus entirely on pure logical reasoning without distractions.
【Optimized Light / Dark Modes】
We've deeply optimized the rendering and switching logic for both Light and Dark modes. Whether you are playing under bright sunlight or enjoying a quiet game in bed, your eyes will get the most comfortable experience possible.
【Bug Fixes & Performance】
We've squashed a few minor bugs and polished the background code to ensure faster loading times and rock-solid stability.
Version 3.0.1
The developer, Volcano Entertainment Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Contact Info
User Content
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Volcano Entertainment Limited
Size
60.8 MB
Category
Puzzle
Compatibility
Requires iOS 15.6 or later.
iPhone Requires iOS 15.6 or later.
iPad Requires iPadOS 15.6 or later.
iPod touch Requires iOS 15.6 or later.
Mac Requires macOS 12.5 or later and a Mac with Apple M1 chip or later.
