Latch vs Sproutdoku

Latch is a game of pure deduction. Every puzzle has one solution, and you can always reason your way to it - no guessing, no luck, no timers rushing you. Just you and a grid that rewards a clear mind. The rule is simple: Place one node in every row, every column, and every colored region - and no two nodes may touch, not even diagonally. From that single rule comes a surprising depth of logic. Mark the cells you've ruled out, place your nodes with confidence, and watch the solution reveal itself. What's inside: • 1,000 verified puzzles - every one checked for a single solution and a path of pure logic. Grids stay a comfortable size; it's the reasoning that deepens, from spotting a single forced cell to deductions spanning several regions at once. • A new daily challenge - one fresh puzzle every day, the same for everyone. • Build your streak - solve each day to keep your streak alive, and watch it climb. • Clear, uncluttered design - bright, distinct colors and nothing on screen but the puzzle. • Learn in a minute - a quick walkthrough teaches you everything; the depth comes from you. • Ads you can switch off - one small purchase removes the banner and between-level ads, for good. • Play anywhere, offline - no account, no sign-up, no connection required. No pressure. No randomness. Just the quiet satisfaction of a puzzle that always makes sense. Think you can solve them all?

Meet Sproutdoku — a fresh take on grid logic puzzles. Plant a sprout in every row, every column and every color patch. Simple to learn in seconds, surprisingly deep to master. THREE SIMPLE RULES • One sprout per row and column • One sprout per color patch • Sprouts can never touch — not even diagonally Every level has exactly one solution, and you can always find it with pure logic. Mark impossible cells with an X, drag to mark whole lines, and take back marks freely with unlimited undo. But choose carefully where you plant: three wrong sprouts and the level is lost! A GARDEN THAT GROWS WITH YOU • 100 hand-tuned levels, from cozy 4×4 beds to sprawling 9×9 gardens • A gentle interactive tutorial teaches you everything in one minute • Difficulty peaks: special HARD and SUPER HARD levels mark your climb • Timed challenges appear as your skills bloom — beat the clock for bonus points, or extend time when a puzzle gets thorny HELPFUL GARDEN TOOLS • Hint: highlights cells the rules already rule out — the logic stays yours • Sprout: plants one correct sprout when you are truly stuck • Unlimited undo for your pencil marks, always free MORE TO LOVE • An adorable sprout buddy cheers you on • Climb the global leaderboard • Your progress is saved automatically — no account, no sign-up • Play offline, anywhere • Colorful, hand-crafted design that is easy on the eyes Fans of sudoku, Queens-style puzzles, star battle and binary logic grids will feel right at home — and anyone can pick it up in seconds. Sproutdoku is free to play. It contains ads and optional in-app purchases, including a one-time option to remove interstitial ads. Ready to grow your brain?