Legacy Sudoku vs SudoEarth

Legacy Sudoku – Classic & Daily Brain Games Rediscover Sudoku with a polished experience designed for quick puzzles, relaxing daily play, and long-term progression. Whether you’re new to Sudoku or looking for a tougher challenge, Legacy Sudoku gives you multiple ways to play — from traditional 9×9 puzzles to shorter 4×4 and 6×6 games, Daily Challenges, Unlimited play, and a full Journey to work through at your own pace. PLAY YOUR WAY • Journey Mode – Progress through hundreds of Sudoku puzzles and build your way through increasingly challenging stages. • Classic 9×9 Sudoku – Choose from Easy, Medium, Hard, Expert, and Master difficulties. • 4×4 Mini Sudoku – Perfect for quick, relaxing sessions. • 6×6 Quick Sudoku – A faster alternative with more depth than Mini Sudoku. • Unlimited Mode – Keep playing across multiple board sizes and difficulty levels without running out of puzzles. • Daily Challenge – Return each day for a new puzzle, build your streak, and track your monthly progress. HELPFUL SUDOKU TOOLS Use Notes to mark possible numbers, take a Hint when you need help, highlight rows, columns, boxes and matching numbers, track mistakes, and customize how much assistance you want while solving. BEAUTIFUL THEMES Change the look and feel of the game with carefully designed themes including Classic, Wood, Midnight, Ocean, Lavender and more. Each theme gives your Sudoku experience a distinct visual style while keeping the board clean and easy to read. TRACK YOUR PROGRESS Follow your Sudoku journey with detailed statistics, achievements, completion history, streaks, and puzzle progress. Resume unfinished games whenever you return and continue exactly where you left off. MAKE SUDOKU YOURS Customize gameplay with options for: • Highlight Areas • Highlight Same Numbers • Highlight Duplicates • Auto Remove Notes • Mistake Limits • Timer • Sound and Haptics • Keep Screen Awake • Daily Challenge Reminders • And more From a quick Mini Sudoku to a challenging Master puzzle, Legacy Sudoku is built for both relaxing play and serious solving.

SudoEarth is a calm, zen-aesthetic sudoku game. No ads. No trackers. No notifications. Just sudoku, painted in watercolor across five real geographies — Iceland, Kyoto, Tuscany, Norway, and Scotland. A SUDOKU WORLD TOUR Each chapter is a place. Iceland's aurora-lit fjords. Kyoto's bamboo grove. Tuscany's honey hills. Norway's cold-blue waterfalls. Scotland's misty highlands. Solve 30 puzzles in each chapter to complete the journey. 150 hand-tuned puzzles in version 1.0, every one verified to have a unique solution. MIRA — A GENTLE COACH Stuck on a puzzle? Mira, your in-game guide, offers three-tier progressive hints — direction first, then technique, only the answer if you ask twice more. The hint flow respects your pace: nothing is given before you've asked. Mira's tier-3 ground-truth gate means the answer is always correct, never an AI guess. WILDLIFE COLLECTION Each chapter has a hand-painted anchor wildlife — Arctic fox, Japanese macaque, Tuscan owl, Norwegian reindeer, Scottish wildcat. Complete a level to unlock the painting. Walk into the Wildlife tab anytime to see your collection. DESIGNED FOR CALM SudoEarth's design language is rice-white paper, soft watercolor washes, italic serif chapter titles, hand-drawn ink icons. No saturated alarming red anywhere — even the "out of hints" state lands on warm gold, not shouty red. The whole app is locked to light mode for now, deliberately, to match the airy notebook feel. OFFLINE-FIRST Every puzzle works offline. The rule-engine fallback means even Mira's hints work without a network — your hints just route locally instead of through our server. Your puzzle progress is saved locally first, then optionally synced to your other devices via Apple Sign-in. PRIVACY-FIRST We do not track you. We do not sell your data. We do not show ads. SudoEarth uses Apple Sign-in's anonymous identifier — we never see your name or email. Crash diagnostics use Firebase Crashlytics with no personal information attached. Full details at sudoearth.app/privacy. PREMIUM SUBSCRIPTION Free play comes with 3 Mira hints per day. SudoEarth Premium unlocks unlimited Mira hints. Two plans — Monthly and Yearly. Both are auto-renewable subscriptions and renew unless cancelled at least 24 hours before the period ends; you can cancel anytime in iOS Settings → your name → Subscriptions. The yearly plan offers the best per-month value. REQUIREMENTS - iOS 26 or later - iPhone or iPad - Optional: Apple Sign-in for cross-device sync LINKS - Privacy Policy: https://sudoearth.app/privacy - Terms of Service: https://sudoearth.app/terms - Support: support@sudoearth.app Auto-renewable subscription terms and conditions: SudoEarth Premium subscriptions automatically renew unless turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the rate displayed at purchase. You can manage and cancel your subscription by going to iOS Settings → Apple ID → Subscriptions after purchase.