Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Element Quiz
Match element symbols, put them in order of atomic number, and open as few clues as possible to score high while learning 30 elements.
Perfect Pitch Test
Spot the odd note out, order sounds from low to high, and slide to match the target pitch exactly in a daily ear test everyone hears alike.
Color Perception Test
Spot the odd tile, order colors from darkest to lightest, and match a target with two sliders to sharpen your eye for tiny brightness differences.
Today's Times Tables
Answer multiplication facts in 60 seconds, build streaks for stars, and fill in the 2–9 times tables to speed up your mental math.
Reaction Time Test
Wait for the green flash, then tap: your reaction time is measured in milliseconds while you duel a friend or a bot in a best-of-five.