Sudojo vs Sudoku Offline

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

A sudoku built around its hint system. When you ask for help, the hint explains the reasoning behind the move instead of simply filling in the square for you. A HINT SYSTEM THAT EXPLAINS ITSELF Tap the hint button and the engine reads your current board, works out which solving method applies to the position in front of you, and highlights the row, column or block involved while it explains the reasoning in plain language. You see where the number comes from, not just what it is. LEARNING MODE A guided lesson section covers solving methods from the basic patterns through to more advanced approaches, each explained with worked examples on a real board. Go through it at your own pace. Everything lives inside the app — no sign-up, no video lessons to watch. FOUR DIFFICULTY LEVELS Easy, Medium, Hard and Expert. Every puzzle is checked during generation and kept only if it has exactly one solution, so you are never working towards an ambiguous board. Puzzles are prepared in the background and kept ready, so starting a game normally takes you straight to the board. PLAY WITHOUT A CONNECTION The puzzles, the hint engine and the lesson content all live on your device, so the game itself works on a flight, on the underground, or anywhere the signal drops. STATISTICS THAT TELL YOU SOMETHING Your best time for each difficulty, win rate, solving speed, current streak, longest streak, and a weekly activity overview. Watch your Expert times come down over the months. Your game statistics are stored on your device. BOARD AIDS YOU CONTROL Every reading aid can be switched on or off in settings, so the board shows exactly as much as you want it to and no more: • Highlight the row, column and block of the square you are on • Highlight every square holding the same number you have selected • Show how many of each digit are still left to place • Note mode for pencil marks, with undo behind it • A mistake limit, with a second chance when you need it Turn them all off and you get a bare grid. Turn them all on and the board does the bookkeeping while you do the thinking. MAKE IT YOURS • A range of themes, from bright and clean through to deep dark • Several typefaces to choose from • Optional animations and haptic feedback • Optional reminders, if you want a nudge to play • A calm board with nothing competing for your attention PICK UP WHERE YOU LEFT OFF Close the app in the middle of a puzzle and the board is saved automatically — the same squares, the same notes, the same timer. Come back hours or days later and carry on from the position you left. PLAYS IN YOUR LANGUAGE Available in dozens of languages, each one fully localized — menus, hints and lesson content included. NO ACCOUNT NEEDED No registration. No login. No email address. Open the app and play. Whether you are learning your first sudoku, filling a commute, or chasing a faster Expert time, this is a number puzzle for people who enjoy the logic. Ads can be removed with a one-time purchase.