Five free exercises for working memory, focus, speed, and number sense. No account, no uploads, nothing leaves your browser — your best scores are saved on your device only.
Working memory
Digits flash one at a time — type them back in order. Each success adds a digit.
Watch the pads flash, then repeat the pattern. It grows by one every round.
Does the word's MEANING match its ink COLOR? Decide fast — 30 seconds.
Answer as many as you can in 60 seconds. A wrong answer costs 5 seconds.
Tap the pad the instant it turns green. 5 rounds — jumping early counts as a miss.
No Fibs — Honest Limitations