Refocus App Blocker. The smartest way to beat social media addiction, stop doomscrolling and combat digital ADHD. Earn your screen time by solving quick brain-sharpening challenges before mindless apps unlock.

Mystery Sudoku Adventure. Solve classic grid puzzles and track down suspects in a deductive logic detective game.

Nonograms, Hashi, Train tracks & Tents

Six Seven Puzzle. A minimalist number-based brain teaser that tests your pattern recognition, strategic planning, and grid card matching.

Play today's free daily logic challenges: Sudoku, Tents & Trees, and Train Track. New seeded boards generated daily at midnight.