Lazy Sudoku

Solve Smarter, Not Harder

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Now with Diagonal Sudoku. Lazy on bookkeeping, sharp on logic. Auto pencil marks, hints that actually teach, Apple Pencil paper mode. Ad-free, always. Lazy on the notes. Sharp on the logic. A clean, ad-free Sudoku that takes care of the bookkeeping so you can enjoy the puzzle. Pencil marks update themselves. Hints show you where to look when you're stuck. Classic 9×9 or Diagonal Sudoku — relax with an easy one, or take on something harder. FEATURES • Automatic pencil marks — notes stay current while you play • Helpful hints — three levels, from a gentle nudge to a step-by-step walkthrough drawn on the grid • Classic Sudoku and Diagonal Sudoku (X-Sudoku) — both diagonals join rows, columns, and boxes as rules • Five difficulty levels — Easy through Diabolical, with curated puzzles in each • Three modes — Relaxed for clean play, Standard for everyday solving, Deep when you want every tool • Scan puzzles with on-device OCR — newspapers, books, printed sheets • Create your own — paste from anywhere, or build with live validation • Save multiple games per difficulty — pause and pick up any time • Track your progress — solved counts, time, personal bests • Made for Apple Pencil — handwriting, pressure-sensitive paper mode, hover support on iPad • Native on iPhone and iPad HINTS THAT ACTUALLY TEACH Most "teaching" sudoku apps name the technique and call it teaching. Lazy Sudoku walks you through it. Step-by-step spotting shows you where to look. Step-by-step eliminations show you why the move works. Drawn on the grid, explained in plain English. Get unstuck without being told the answer. AD-FREE, ALWAYS No ads. No banners. No interruptions. Just Sudoku. We do the bookkeeping. You do the thinking. Lazy on the notes. Sharp on the logic. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

A Closer Look

Ratings & Reviews

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New in this version: • Diagonal Sudoku (X-Sudoku) — both diagonals join rows, columns, and boxes as ninth-rule units. First-game tutorial, OCR auto-detect, full share-and-print round-trip. • Relaxed Mode gets a tutor — Explain narrates why a digit goes where it does, not just what to place. • Shadow Notes — faint ghost candidates show what's possible in a cell without cluttering your grid. • Sharing and Print — Copy and Get PDF actions in the share dialog, and the printed PDF includes your pencil marks. • Paper Mode deepens — Full Paper as a feel rather than a mode, naked-single hints one at a time, clearer pressure feedback. • New techniques — Fireworks, Bowman's Bingo, Aligned Pair Exclusion, Pattern Overlay Method, Remote Pair. They surface in hints and the picker when they apply. • Watched Techniques — mark a rare pattern and the app flags it the moment it shows up in a scan.

Version 1.0.4

The developer, Sergei Fedorov, 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 Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • 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

    • Larger Text

    • Dark Interface

    • Differentiate Without Color Alone

    • Sufficient Contrast

Information

Seller
  • Sergei Fedorov
Size
  • 213.2 MB
Category
  • Puzzle
Compatibility
Requires iOS 15.5 or later.
  • iPhone
    Requires iOS 15.5 or later.
  • iPad
    Requires iPadOS 15.5 or later.
  • iPod touch
    Requires iOS 15.5 or later.
  • Mac
    Requires macOS 12.4 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English and 13 more
  • English, Arabic, Finnish, French, German, Hebrew, Hindi, Indonesian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
Age Rating
4+
In-App Purchases
Yes
  • Diagonal (X) Sudoku - All $8.99
  • Diagonal (X) Sudoku - 12 Clues $4.99
  • Diagonal (X) Sudoku - Extreme $1.99
  • Diagonal (X) Sudoku - Diabolical $1.99
  • Diagonal (X) Sudoku - Tough $1.99
  • Diagonal (X) Sudoku - Moderate $1.99
  • Diagonal (X) Sudoku - Gentle $1.99
  • Lazy Sudoku Premium - Lifetime $69.99
  • Lazy Sudoku Pro - Lifetime $49.99
  • Lazy Sudoku OCR $0.99
  • Learn More
Copyright
  • © Sergei Fedorov
  • Developer Website
  • Privacy Policy

    • Supports

    • Game Center

      Discover new games and play with friends.

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More

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