Screenshots from the App Store.
Divide the grid into rectangles. Each number is the area of its rectangle. A pure logic puzzle you solve with numbers alone. The rules are simple. Split the whole board into rectangles (squares count too). Each rectangle holds exactly one number, equal to how many cells it covers. Fill every cell — no gaps, no overlaps — and you've solved it. It's faster to feel than to read: just drag to draw. No flashy effects, no complicated rules. Wrapped in a calm, paper-and-indigo Japanese design made for quiet focus. Features ◇ Intuitive to play Drag to draw a rectangle, tap to remove it, redo as often as you like. ◇ Four difficulties Easy, Medium, Hard, and Expert — pick what fits your mood and your minutes. ◇ A daily puzzle One shared board for everyone each day, with a streak counter and calendar. ◇ Every puzzle has one unique solution Each board is verified by a solver to be uniquely solvable — so it's always logic, never guessing, right to the last cell. ◇ A gentle hint Stuck? Reveal one correct rectangle and keep your momentum. ◇ Your stats Best and average times per difficulty, no-hint rate, total time, and a daily calendar — quiet progress you can watch add up. ◇ Fully offline · Dark mode · Haptics · English & Japanese Great on a plane, or in a dark room before sleep. Great for ・Sudoku and Picross fans looking for their next logic puzzle ・Quiet focus during a commute, a break, or before bed ・Anyone tired of busy interfaces ・Players who love earning the answer by reasoning, not luck ・Building a small daily habit of one puzzle a day Privacy & peace of mind This app runs fully offline. No account needed. Your play records are stored only on your device — nothing is sent to a server and no personal data is collected. Even the daily puzzle is generated from the date, so no connection is required.
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