One puzzle a day. Pure logic, never guessing.
A daily logic puzzle for iPhone and iPad. Light lantern cells on a grid using number clues — every board solvable by deduction alone.
iPhone & iPad · iOS 17+
A glimpse of the board
Each number tells you how many of its neighboring cells are lit. Deduce the rest.
Everyone plays the same deterministic daily puzzle, generated fresh every midnight. No two days alike.
No sign-in, no tracking, no interruptions. Progress and streaks stay on your device.
Four difficulty tiers, freshly generated on demand any time you want another round.
Every daily puzzle is verified solvable by pure deduction before it ships. Never requires guessing.
A grid of clues. A pattern of light.
No luck involved — just the puzzle, and you.