Sudojo vs Sudoku Logic Refined

Sudojo is the ultimate Sudoku learning platform that teaches you how to solve puzzles — not just gives you answers. Progress from beginner to expert through a structured belt system while mastering 60+ real solving techniques used by championship players. DAILY CHALLENGES • A fresh puzzle every day tailored to your skill level • Track your daily streak and compete with yourself • Share your completed puzzles with friends LEARN 60 SOLVING TECHNIQUES • Each technique includes step-by-step explanations and practice puzzles Basics: Full House, Hidden Single, Naked Single Pairs & Tuples: Hidden Pair, Naked Pair, Locked Candidates, Hidden Triple, Naked Triple, Hidden Quad, Naked Quad Fish: X-Wing, Swordfish, Jellyfish, Squirmbag Finned Fish: Finned X-Wing, Finned Swordfish, Finned Jellyfish, Finned Squirmbag Sashimi Fish: Sashimi X-Wing, Sashimi Swordfish, Sashimi Jellyfish Franken Fish: Franken X-Wing, Franken Swordfish, Franken Jellyfish Wings: XY-Wing, XYZ-Wing, WXYZ-Wing, VWXYZ-Wing, UVWXYZ-Wing, TUVWXYZ-Wing, STUVWXYZ-Wing Single-Digit Patterns: Skyscraper, Two-String Kite, Empty Rectangle, Simple Coloring, W-Wing, Remote Pairs, Crane, Firework Unique Rectangles: Type 1, Type 2, Type 3, Type 4, Type 5, Hidden UR, Avoidable Rectangle Almost Locked Sets: ALS, ALS-XZ, ALS Chain, Sue de Coq, Death Blossom Chains: X-Cycles, Grouped X-Cycles, X-Chain, XY-Chain, AIC, Medusa Coloring, BUG+1, Forcing Chains, Forcing Net SMART HINT SYSTEM • Hints that teach you the technique, not just the answer • Visual highlighting shows exactly which cells and candidates matter • Step-by-step walkthrough of the solving logic • Learn the "why" behind every move BELT PROGRESSION SYSTEM • 12 belt levels from White Belt (beginner) to Black Belt (master) • Each belt introduces new techniques and harder puzzles • Earn points, unlock badges, and track your improvement • See your solving skills grow over time 12 DIFFICULTY LEVELS • Beginner to Extreme — there's always a new challenge • Each level focuses on specific techniques • Free access to foundational levels • Premium unlocks advanced and expert difficulties MORE FEATURES • Enter custom puzzles manually or scan from paper • Multiple display modes: Numbers, Kanji (漢数字), or Emoji • Pencil marks with auto-candidate mode • Timer and error highlighting (optional) • Dark mode and 16 language options • Sync progress across devices with your account • Works on iPhone, iPad, and Mac FREE & PREMIUM • Play daily puzzles and beginner-to-challenging levels for free • Subscribe to unlock advanced levels, expert techniques, and full hint access • Blue Belt: Unlocks Difficult, Intense, and Expert levels • Red Belt: Unlocks all levels including Brutal and Brain Freeze Whether you're picking up Sudoku for the first time or you're an experienced solver looking to learn advanced techniques, Sudojo is your path to mastery. Terms of Use: https://sudojo.com/en/terms Privacy Policy: https://sudojo.com/en/privacy

Most sudoku apps just hand you the answer. This one teaches you to find it yourself. WHY IT'S DIFFERENT Hints that teach Open a hint and you don't just get the next number — you get the technique behind it: what it is, why it works, and how to spot it next time. Reveal it step by step, so you decide how much help you want. 80+ techniques, explained From your first Naked Single to X-Wing, Swordfish, Y-Wing, Skyscraper, and AIC/ALS chains — every technique comes with a clear card: what it is, why it works, how to find it, and a worked example you can replay. A daily challenge One hand-picked puzzle a day — the same for everyone, everywhere. Curated, uniquely-graded puzzles Five difficulties from Easy to Master. Every puzzle is validated for a single solution and graded by the hardest technique it needs — pure logic, never guessing. Step-by-step replay Watch any puzzle solved one logical step at a time, and see exactly where each technique applies. Calm and focused A clean, distraction-free board. No banners, no pop-ups, no clutter — just you and the logic. Play fully offline. MADE FOR PEOPLE WHO WANT TO IMPROVE • Learn solving techniques the right way • Crack hard puzzles with logic alone • A board that gets out of your way SUDOKU PRO Try everything free for 3 days, then keep unlimited hints, the full technique library, step-by-step replay, and the daily challenge. • Monthly — $4.99 (3-day free trial) • Yearly — $24.99 (3-day free trial · save 58%) • A one-time unlock is also available. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period; your Apple Account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Terms of Use: https://sudoku.app/terms Privacy Policy: https://sudoku.app/privacy