Logic Grid — Zebra Puzzles

Love Einstein's Riddle and "zebra" logic puzzles? Logic Grid gives you an endless supply of them — freshly generated, every one guaranteed to have a single solution you can reach by pure deduction. No guessing, ever.

Most logic puzzle apps ship a fixed pack you eventually finish, lock the good puzzles behind a subscription, or interrupt you with ads in the middle of a solve. Logic Grid does none of that.

WHAT YOU GET
• Unlimited puzzles — a new one is generated on demand, so you never run out
• Four difficulty levels, from gentle 4x4 grids to brain-bending 6x5 Expert
• A fresh Daily Puzzle every day, the same for everyone, with a solve streak
• Ten playful themes: neighborhoods, cafes, bookshelves, spaceports and more
• Natural, readable English clues — match, exclusion, order and adjacency
• A clean solving board with undo, per-cell assignment and instant checking
• Optional hints when you're truly stuck — entirely your choice
• Local stats: puzzles solved, best times and your daily streak

BUILT TO RESPECT YOUR TIME
• 100% offline — solve on a plane, on the subway, anywhere
• No account, no sign-up, no data collection
• No ads while you're solving a puzzle — the board stays clean
• Free, with no puzzles locked behind a paywall

Every puzzle is checked for a unique, guess-free solution before you ever see it, so the logic always works out. Tap, deduce, solve. Then do it again.