RectaFlow

A little logic. A lot of calm. RectaFlow is a Shikaku-style rectangle puzzle for iPhone and iPad. Each number tells you the area of one rectangle. Draw rectangles that contain exactly one numbered clue, avoid overlaps, and cover the whole board. MAKE A MOMENT FOR YOURSELF Start with gentle 3×4 boards and work through 500 campaign levels, up to challenging 16×16 puzzles. Prefer a fresh board? Quick Play offers Easy, Medium, and Hard difficulties. A NEW DAILY RITUAL Play the Daily Challenge and build your day streak. Your daily puzzle stays consistent throughout the day, so you can return and finish at your own pace. PICK UP WHERE YOU LEFT OFF Your campaign, Quick Play, and daily puzzle save automatically, including your moves, time, placements, and remaining hints. Use Continue to resume an unfinished game. SOUND THAT FITS YOUR FLOW Enjoy changing stereo chimes, a victory melody, and optional ambient music. Sound, music, and haptic feedback have separate controls. PLAY YOUR WAY Hints, undo, reset confirmation, saved campaign stars, Dark Mode, and 15 interface languages make it easy to settle in. Core puzzles can be played offline. RectaFlow is free to play. Banner ads stay outside the puzzle grid. Rewarded ads are optional and provide extra hints. The optional Supporter Pass removes banner ads; purchases can be restored from Settings. No account is required.