Fill every grid with full moons and crescents so each row and column stays balanced, never runs three the same, and honours the = and × clues. One logical solution, never a guess — on iPhone and iPad.
One shared board a day, the same for everyone — solve it on your own time and grow your streak. Or roll unlimited fresh boards in Practice.
Fill the grid with full moons and crescents. Each row and column ends balanced, never three the same in a row, and every = joins a matching pair while every × joins opposites.
Easy, Medium, Hard, and Expert. Every puzzle has exactly one solution you can reason out step by step — never a guess.
Fully localized in fifteen languages, so the whole game speaks yours — English, French, Spanish, German, Japanese, and more.
Light, Paper, Dark, and a colour-blind-friendly Accessible palette with a clear symbol on every cell, readable in any light.
No ads. No accounts. Only anonymous usage data, never personal information — your progress stays on your device.
Free on the App Store. iPhone & iPad.
Download on the App Store