Sudoku Lab: Number Puzzle

4 Levels. Daily. Zen. Hardcore

Free · Designed for iPad. Not verified for macOS.

Elegant Sudoku: 4 difficulty levels, Daily Challenge, Zen and Hardcore modes! Sudoku Lab is the most polished free Sudoku game for iPhone and iPad. Master 4 difficulty levels, beat the Daily Challenge, and track your streaks. FOUR GAME MODES • Classic — 4 difficulty levels (Easy, Medium, Hard, Expert) • Daily Challenge — same puzzle for every player, every day. Build your streak. • Zen Mode — practice freely, no lives, no pressure • Hardcore — unlock by completing 10 Expert puzzles. One mistake = game over. BUILT FOR FOCUS • Pencil marks (notes) for advanced play • Auto-notes shortcut • Unlimited undo • Hints when you're stuck • Conflict highlighting • Lives system (3 strikes in Easy/Medium, 2 in Hard/Expert) TRACK YOUR PROGRESS • 34 achievements to unlock • Best times per difficulty • Daily streak tracker • Detailed stats per mode FREE TO PLAY Sudoku Lab is free, with optional ads to support development. No signup, no subscription — your progress is saved on your device. ABOUT NIOL Sudoku Lab is a title from NIOL studio — also makers of Block Lab, a block puzzle game. Built with care for puzzle lovers.

Ratings & Reviews

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Visual refresh: new Graphite & Amber theme and updated app icon. Puzzle generation is now much faster (especially Expert difficulty), and new games start almost instantly thanks to background pre-generation.

Version 1.6.0

The developer, Wellington Peres, 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

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
  • Wellington Peres
Size
  • 44.7 MB
Category
  • Puzzle
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English
Age Rating
4+
Copyright
  • © 2026 NIOL
  • Developer Website
  • Privacy Policy

    • More by Wellington Peres

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