NAND vs ChessTimer

NAND is a simple puzzle game with six levels and no timer. Using bitwise operators and arrow keys, try to reach the goal at the top in the fewest moves! It will be difficult for beginners and people unfamiliar with bitwise operators, but you can improve with practice and understanding!

ChessTimer is the chess clock built to outclass the rest. It's free, with no ads, no account and no tracking; an optional theme pack adds 96 more themes. EVERY TIME CONTROL, DONE RIGHT • Fischer increment, Bronstein delay, simple (US) delay, or sudden death • Multi-stage tournament controls (e.g. 40 moves in 90 min, then 30 min, +30s) • Per-side handicap: give each player a different clock ONE TAP TO PLAY • Bullet, Blitz, Rapid and Classical presets ready to go • Build any custom cadence and save your favorites MADE TO LIVE ON YOUR TABLE • Oversized, glanceable digits • Sound + haptic feedback on every move and a flag alert • Screen stays awake during a game; auto-pauses when interrupted • 22 free themes in four collections (classic, meme, illustrated and photo), many with their own artwork, sounds and ambient effects • Zen photo themes (lagoon, mountains, forest, aurora) and an optional analog dial face • Pick your style in a swipeable theme gallery on first launch • High-contrast colorblind-friendly theme included OPTIONAL THEME PACK • 96 extra themes, one-time purchase, no subscription WORKS FOR MORE THAN CHESS Go, shogi, debate, or any two-player turn-based game. FREE & PRIVATE No ads. No accounts. No tracking. The clock works fully offline. MORE CHESS APPS BY THE SAME MAKER ChessEndings for endgames, ChessAtlas for openings, DarkSquares for blindfold chess and ChessTactics for tactics puzzles. All four are a tap away in Settings.