Zensaw 1

iOS Universel / Jeux

Zensaw is a minimalist logic puzzle game built around one elegant rule: fill the entire grid with rectangles, and each rectangle must contain exactly one number — equal to its area.
No guessing. No luck. Pure deduction.
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How to Play Each puzzle is a grid scattered with numbers. Your goal is to partition the grid completely into non-overlapping rectangles. Every rectangle must contain exactly one clue number, and that number tells you the rectangle's exact area. A 6, for example, must live inside a 2×3 or a 1×6 rectangle. When every cell is covered and every number is satisfied, the puzzle is solved.

It sounds simple. It isn't. And that's exactly the point.
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Designed for Focus Zensaw strips away everything that doesn't belong. No timers pressuring you. No lives to lose. No ads interrupting your flow. Just you, the grid, and the quiet satisfaction of watching everything fall into place.

The interface is clean and tactile — draw rectangles by dragging across the grid, tap to erase, and feel the subtle audio feedback as each piece locks in. The visuals adapt beautifully to both light and dark environments.
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A Puzzle for Every Mood Whether you have two minutes or two hours, Zensaw meets you where you are.

Starter — Gentle 5×5 grids to learn the rules and find your rhythm.
Easy — Slightly larger puzzles that introduce more interesting configurations.
Medium — Where the real thinking begins. Multiple valid-looking paths, only one correct solution.
Hard — Demanding grids that require careful planning and logical elimination.
Expert — For solvers who want a genuine challenge and aren't afraid of a long session.
Master — Procedurally generated, infinite puzzles. No two are ever the same.
Every difficulty level tracks your completion rate and best solve times, so you always know where you stand and where to push next.
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Completely Offline Zensaw works without any internet connection. Your progress and statistics are saved locally on your device — nothing is sent to any server, ever. There are no accounts to create, no sign-ins, no cloud sync. Just open the app and play.
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Private by Design We collect zero data. No analytics. No tracking. No advertising identifiers. Zensaw has no idea who you are, and that's intentional. Your solve times and puzzle history belong to you alone, stored only on your device.
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Why Shikaku? Shikaku (Japanese for "four corners" or "rectangle") is a logic puzzle form that originated in Japan. Unlike Sudoku, which operates on numbers and elimination grids, Shikaku is purely spatial — it trains your ability to visualize area, proportions, and geometric relationships. Solvers often describe the experience as meditative: methodical, quiet, and deeply satisfying.

Zensaw brings this puzzle tradition to a modern mobile experience without compromise.
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Features at a Glance · 60+ hand-crafted puzzles across six difficulty levels · Infinite Master mode with procedurally generated puzzles · Full dark mode support · Subtle audio feedback with an elegant chime system · Progress tracking and personal best times · No ads, no purchases, no accounts · Fully offline — plays anywhere, anytime · Accessible design with keyboard and screen reader support
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Zensaw is for people who like to think. If you enjoy logic puzzles, spatial reasoning games, or just want something genuinely calming to reach for when you need a mental reset — this is it.

Download free. Play forever.