Memory Cards
Study a grid of colored numbered cards, then recall them in order — 8 levels of increasing difficulty to train your visual memory
Memory Cards
Study the cards with their numbers. Then recall them in order 1→2→3…
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Spin the wheel to make a random decision — add your own options and let fate decide
Coin Flip & Dice Roller
Flip a coin or roll any dice (d4–d20) with satisfying animation and cryptographic randomness — track history and roll multiple dice
Focus Mode Timer
Full-screen focus timer with ambient sound options — customizable work and break intervals with session tracking
Name Picker
Paste a list of names and pick a random winner — perfect for giveaways, classroom picks, and raffle draws
Dark Mode Typing Test
Minimal, beautiful dark-mode typing test — type passages, track WPM and accuracy in real time, inspired by Monkeytype
Chess vs AI
Play chess against Stockfish — a powerful engine running in your browser via WebAssembly. Choose your color, set difficulty from Easy to Expert, and review moves in the history panel
Reaction Time Test
Click when the screen flashes to measure your reaction speed in milliseconds — challenge friends and share your score