Rectango: Shikaku Logic Puzzle

Rectango is a calm, beautifully simple logic puzzle for everyone who loves to think. No luck and no guessing: just you, a grid of numbers, and that satisfying moment when everything clicks into place.

HOW TO PLAY
Rectango is based on the classic Japanese puzzle type known as Shikaku, also called Rectangles or Divide by Squares.
- Each puzzle is a grid with numbers scattered across it.
- Divide the whole grid into rectangles.
- Every rectangle must contain exactly one number, and that number must equal its area.
- No overlaps. No gaps. One perfect solution.

Drag to draw a rectangle and tap one to remove it. Correct rectangles are outlined in ink-blue and mistakes glow red, so you always know where you stand.

EVERY PUZZLE HAS EXACTLY ONE SOLUTION
Each grid is checked before you ever see it, so it can always be solved by pure logic. Think it through: the answer is always there.

FOUR GRID SIZES, ONE JOURNEY
- 5×5: quick and relaxing, perfect for a coffee break
- 7×7: a satisfying step up
- 9×9: for focused minds, unlocked by completing 10 puzzles on 5×5 and 20 on 7×7
- 11×11: the largest and most demanding grid, unlocked by completing 30 puzzles on 9×9

Progress counters show exactly how close you are to the next grid.

FEATURES
- Unlimited puzzles, with a fresh grid every time
- Unfinished puzzles are saved automatically
- Undo and Clear board, so one slip never costs you a puzzle
- Smart hints when you are stuck
- Beat your best: the win screen shows your time, hints used and new records
- Satisfying sound effects and haptic feedback, with five settings from high to silent
- Calm, distraction-free design inspired by Japanese paper puzzles
- No account and no sign-up
- Available in English, German, Spanish, French, Slovak and Arabic

FREE TO PLAY
Rectango is free and supported by ads. Each 9×9 or 11×11 puzzle starts with a short video. One small purchase removes all ads, unlocks every grid size instantly and lets you play them without videos, permanently.

If you enjoy Sudoku, nonograms, Shikaku or any number puzzle, Rectango offers a calm new way to think. Download it and start with your first 5×5 grid.

Recent changes:
Sound and haptics
• New sound effects for drawing, clearing, hints and solving
• Vibration you can feel with the phone muted
• One button in the header cycles high, medium, low, vibrate only and silent. It starts at medium.

Also in this update
• Deutsch added — Rectango now speaks six languages
• Fixed the title overlapping the status bar clock while scrolling
• Full-screen ads load ahead of time, so they open without a wait