Five difficulties from Easy to Extreme, a daily puzzle everyone shares, and
notes you write in pencil. No hints, no game-overs — just you and the grid.
A classic sudoku with the soul of a paper puzzle.
The givens are printed in crisp type; your answers go in with a handwritten
pencil touch. It feels less like a screen and more like the puzzle page of a
morning paper.
◆ WHY YOU'LL LIKE IT
- Quiet, focused solving — no flashy effects
- Build a daily brain-training habit, one puzzle a day
- Pure sudoku: no hints, no hand-holding
◆ FEATURES
- Five difficulties: Easy, Medium, Hard, Expert, Extreme
- Difficulty means technique, not clue count — Extreme genuinely needs the
advanced patterns, and Expert stops right below them
- Every puzzle has exactly one solution — solvable by logic alone
- Daily Puzzle: the same board for everyone, playable only that day
- Attendance-style streaks with a calendar record
- Pencil notes, undo and redo
- Same-number and row/column/box highlighting
- Duplicates turn red — but the answer is never given away
- A wrong move never ends the game; finish at your own pace
- Best and average times per difficulty, plus separate no-notes records
- Game Center leaderboards: best times and a daily ranking
- Records and your game in progress follow you across devices over iCloud
- Light, dark, or follow the system
- Fully playable offline
◆ ON IPAD
- Write answers straight into a cell with Apple Pencil — the handwriting is
recognized as you go
- Double-tap the Pencil to switch between notes and answers
- A wide layout that puts the header on one line and keeps the board large
◆ ACCESSIBILITY
- VoiceOver labels for every cell and key
- Dynamic Type across the interface
Open today's puzzle and start your streak. All you need is a pencil.
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Version 0.2.5
The developer, Byeongjin Lee, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
Location
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
Supported Features
VoiceOver
Dark Interface
Differentiate Without Color Alone
Reduced Motion
Information
Seller
Byeongjin Lee
Size
16.4 MB
Category
Puzzle
Compatibility
Requires iOS 17.0 or later.
iPhone Requires iOS 17.0 or later.
iPad Requires iPadOS 17.0 or later.
Mac Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.