Sudoku.by BinG

Every puzzle has an answer

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

Every puzzle has an answer. A quiet sheet of paper and a problem that works out. sudoku is a minimal, restrained take on the classic — no ads, no tracking, no noise. Just you and the grid. Warm paper white, a single Morandi accent, monospace numerals under a serif title. Open it and solve; finish and let it go quiet. Four difficulties Easy / Medium / Hard / Master. Master ships with world-renowned classic puzzles and a graded bank — from first steps to the very edge. An AI coach that teaches you to think Not just answers. Naked singles, hidden singles, naked pairs, pointing pairs, X-Wing — each technique highlighted right on the board, so you see the logic instead of being handed it. Made for beginners, too A four-step tutorial on the real board: from the rule to the deduction, then straight into your first game. Paper mode Solve like it's newsprint: no mistake limit, nothing flagged, nothing highlighted. The verdict is yours alone. Tools that stay out of the way Pencil notes, undo, erase, hints; instant conflict flags and soft region highlights — all switchable. And more • Bilingual English / 中文, switch anytime • Five Morandi accent colors — pick your taste • 17 illustrated guides, from the rules to master techniques • Share a puzzle as a text token; challenge a friend on the same board • Best times and full history • Carefully tuned haptics and sound • Fully on-device — your data never leaves your phone Pay once, yours forever. No subscriptions, no consumables, no ads. — Independently designed and built. One person, quietly.

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· Fixed a connection issue with the AI Coach — it's now fast and reliable wherever you are. · Minor stability and polish improvements.

Version 1.1.1

The developer, 涵宇 朱, 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 Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, 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

    Provider
    • 涵宇 朱
    Size
    • 24.6 MB
    Category
    • Education
    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.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 蔡正阳
  • Developer Website
  • Privacy Policy

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