Sudoku by Joseph
Classic Number Puzzle
Free · In-App Purchases
15 years, millions of puzzles solved, zero lives or coins. 12 variants, Daily Challenge, 46 languages.
Discover the most complete Sudoku experience on the App Store. Sudoku by Joseph offers 12 unique puzzle variants in one beautifully designed app - trusted by players for over 15 years with a 4.66-star rating from 2,400+ reviews.
THREE FREE VARIANTS TO ENJOY:
- Classic Sudoku - The timeless 9x9 number puzzle
- Jigsaw Sudoku - Irregular regions replace the standard boxes
- Killer Sudoku - Cage sums meet Sudoku logic
NINE PREMIUM VARIANTS FOR TRUE ENTHUSIASTS:
- 16x16 Sudoku - Super-sized grid for an extra challenge
- Twodoku - Two overlapping Sudoku grids
- Tripledoku - Three interlocking puzzles
- Gattai-3 - Three grids sharing regions
- Sohei - Four grids in a cross pattern
- Samurai - Five overlapping grids
- Cross Sudoku - A cross-shaped multi-grid puzzle
- Flower Sudoku - Five grids in a flower arrangement
- Kazaguruma - A pinwheel of four grids
FEATURES THAT MAKE THE DIFFERENCE:
- Daily Challenge - A new puzzle every day to keep your streak alive
- Multiple difficulty levels - From beginner-friendly to fiendishly hard
- 13 stunning themes - Customise your experience with light and dark modes
- Customisable fonts - Choose the look that suits you
- Full statistics - Track your progress and improvement
- Game Center - Compare your achievements with friends
- Ad-free with Premium - No interruptions, ever
- Works offline - Play anywhere, anytime
- Privacy-focused - We respect your data
Crafted by an indie developer with a passion for puzzles, Sudoku by Joseph is the app that grows with you. Start with Classic, Jigsaw, or Killer for free, then unlock all 12 variants with a premium subscription.
Premium Subscription:
- Payment will be charged to your Apple ID account at the confirmation of purchase
- Subscription automatically renews unless it is cancelled at least 24 hours before the end of the current period
- Your account will be charged for renewal within 24 hours prior to the end of the current period
- You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase
- Any unused portion of a free trial period will be forfeited when you purchase a subscription
Privacy Policy: https://sudokubyjoseph.app/privacy
Terms of Use: https://sudokubyjoseph.app/eula
more 2026.17:
- Fixed a bug that prevented puzzles from loading
2026.16:
- Fixed a few small bugs
2026.15:
- Fixed a screen rotation bug on iPhone
2026.14:
- Fixed a small bug
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.17 26 Aug
2026.16:
- Fixed a few small bugs
2026.15:
- Fixed a screen rotation bug on iPhone
2026.14:
- Fixed a small bug
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.16 25 Aug
2026.15:
- Fixed a screen rotation bug on iPhone
2026.14:
- Fixed a small bug
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.15 24 Jul
2026.14:
- Fixed a small bug
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.14 13 Jul
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.13 29 May
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.12 18 May
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.11 22 Apr
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.10 21 Apr
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.9 19 Apr
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.8 14 Apr
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.7 11 Apr
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.6 4 Apr
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.5 30 Mar
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.4 29 Mar
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
2026.3 25 Mar
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 10 new puzzle variants (12 total) including Killer, Samurai, Flower, and Kazaguruma
- All puzzles rebuilt with difficulty based on real solving techniques
- Daily Challenge with streaks
- 13 colour themes with light and dark mode
- 14 symbol styles: numbers, letters, Roman numerals, emoji, and custom
- Complete redesign
- Premium: all variants, all themes, all symbol styles, ad-free
2026.2 22 Mar
Biggest update in 15 years:
- 10 new puzzle variants (12 total) including Killer, Samurai, Flower, and Kazaguruma
- All puzzles rebuilt with difficulty based on real solving techniques
- Daily Challenge with streaks
- 13 colour themes with light and dark mode
- 14 symbol styles: numbers, letters, Roman numerals, emoji, and custom
- Complete redesign
- Premium: all variants, all themes, all symbol styles, ad-free
2026.1 20 Mar
made menu and settings font clearer
2025.1 16/03/2025
- small bug fix and minor tweaks to UI
- new privacy focused analytics
2024.5 04/06/2024
- small bug fix and minor tweaks to UI
2024.4 29/05/2024
- minor tweaks to UI
2024.3 26/05/2024
- fixed bug with Google's Consent Management
- tweaks to metadata and localization
2024.2 19/05/2024
- fixed banner advertisement display bug on iPad when in landscape
- tweaks to meta data
2024.1 13/05/2024
- compliance to Google Ads' privacy consent for European users
- rotation bug fix on iPhone 15
2023.6 12/01/2024
- tweaks to meta data
Previous updates included:
- fixed issue with audio - you can now play while listening to music
- added option to tweak error color for color blind
- fixed small advertising related bug
- fixed banner advertisement size on iPads
2023.5 05/07/2023
2026.17:
- Fixed a bug that prevented puzzles from loading
2026.16:
- Fixed a few small bugs
2026.15:
- Fixed a screen rotation bug on iPhone
2026.14:
- Fixed a small bug
2026.13:
- Fixed a small bug
2026.12:
- Fixed a Gattai-3 bug in the Daily Challenge
- New high contrast option
2026.11:
- Fixed a small bug
2026.10:
- Fixed a visual bug in Classic puzzles
- Fixed a small crash
2026.9:
- Fresh puzzles
- New option to play Jigsaw with colourless zones
2026.8:
- Tweaked highlight colouring
- Fixed a Killer bug in the Daily Challenge
- Added a reset statistics button
2026.7:
- Long-press to enter pencil marks (enable in Settings)
- Fixed statistics and dark mode readability
- Fresh puzzles
2026.6:
- Fixed a few small bugs
2026.5:
- Fixed a crash in the statistics
2026.4:
- Auto Pencil Marks: automatically fill in all pencil marks (Premium)
- Candidate Filter: highlight cells containing a specific candidate
2026.3:
- Fixed a crash when completing a puzzle
- Toggle a cell value by tapping the number again
- Improved hint visuals
2026.2:
- Option to hide the clock
- Customisable pencil markings
- 7-day free trial
2026.1:
Biggest update in 15 years:
- 12 puzzle variants including Killer, Samurai, Flower, and Kazaguruma
- Daily Challenge with streaks
- 13 colour themes, 14 symbol styles
- Complete redesign
more Version 2026.17 26 Aug
Data Linked to You The following data may be collected and linked to your identity:
Location Identifiers Usage Data Diagnostics Data Not Linked to You The following data may be collected but it is not linked to your identity:
