Blue Sudoku Puzzle
Calm puzzles with no pressure
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Blue Sudoku is a quiet place to solve puzzles.
No account, no sign-up, no daily streak nagging you to come back. Open it, pick a difficulty, and play. Your progress is saved automatically, so you can put it down mid-puzzle and pick it up days later exactly where you left it.
FIVE DIFFICULTIES, EARNED IN ORDER
Easy and Medium are open from the start. Win eight games on Medium and Hard unlocks, then Expert, then Chaos. Each level is a real step up, and reaching the next one means something because you got there by playing.
BUILT FOR LONG SESSIONS
• Pencil marks for the possibilities you are still weighing
• Highlighting for the row, column and box you are working in
• Matching digits lit up across the grid
• Undo, erase, and a hint when a puzzle stops moving
• A timer you can hide entirely if it stresses you out
FIVE THEMES
Light, Classic black and white, Dark, and two pastels — Lavender and Peach. Correct and incorrect entries stay clearly distinguishable in every one of them, which is not a given and took some care to get right.
DUEL A RIVAL
Race a stand-in opponent whose pace is built from your own past times. A lane above the grid shows both of you moving; finish first and the win counts. There is no server, no matchmaking and no chat — the rival is generated on your device.
CLIMB THE FOUR ELEMENTS
Fire, Water, Earth and Air, twenty stages each. Wins move you up the ladder one stage at a time, and the difficulty follows your rank rather than a menu choice.
COLLECT THIRTY-TWO BADGES
Every second finished game lights another badge. Eight badges seal an element; four seals complete the set. Finishing counts, not winning.
TRACK YOUR PROGRESS
Per difficulty: games played and won, win rate, flawless wins, best and average time, current and best streak. All of it stays on your device.
ELEVEN LANGUAGES
English, Turkish, German, French, Spanish, Italian, Brazilian Portuguese, Japanese, Arabic, Urdu and Persian.
EVERY PUZZLE IS SOLVABLE BY LOGIC
Puzzles are generated with a single guaranteed solution and graded by the techniques they actually require. You will never need to guess.
PLAYS OFFLINE
The puzzles are generated on your device, so the game works on a plane, on the underground, or anywhere with no signal. Only the ads need a connection.
A NOTE ON ADS
The game is supported by ads: a banner while you play, and an occasional full-screen ad between games. Video ads are always optional — you watch one only if you choose to trade it for extra hints, and declining costs you nothing but the hint.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A maintenance release. The game itself is unchanged — this update refreshes the information the App Store shows about the app.
The developer, Stephanie Harfelie, 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:
- Location
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephanie Harfelie
- Size
- 48.7 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
English and 10 more
- English, Arabic, French, German, Italian, Japanese, Persian, Portuguese, Spanish, Turkish, Urdu
- Age Rating
4+
- 4+
- Infrequent
Contests
Contains
Advertising
- Copyright
- © 2026 Mimok