Cognitive
Reaction
11How fast you respond to what you see or hear.
Reaction TimeClick as soon as the screen turns green. Averaged over 5 trials.new
Spot the DifferenceFind the odd tile — a subtle color shift among near-identical tiles. 60 seconds; the grid grows and the shift gets subtler as your accuracy climbs.new
Time EstimationStop the timer at exactly N seconds — no clock. Tests time perception.new
Tap SpeedTap as many times as you can in 10 seconds. Pure motor speed.new
Color PopTap the green targets the instant they appear — avoid the red ones. Speeds up as you go.new
Red Light Green LightAdvance only on green — tapping on red knocks you back. Race to the finish line.new
Symbol DigitNine symbols stand for the digits 1-9, and the key stays on screen the whole time. Substitute as many as you can in ninety seconds.beta
Aim TrainerClick all 30 targets as fast as you can. Pure pointer accuracy and reaction speed.new
Vigilance (PVT)Tap the instant a counter appears, over and over. The gold-standard sustained-attention and alertness test.new
Choice ReactionA target lights up on the left or right — hit the matching side as fast as you can. Measures decision speed, not just raw reflex. Averaged over 6 trials.new
Anticipation TimingA marker races toward the line — press the instant it arrives. It vanishes near the end on later trials, so you must extrapolate. Scored on timing error.new
Numeracy
15Working with numbers, quantities and estimation.
Fast EstimationEstimate divisions, square roots and percentages — pick the closest.new
Mental GeometryQuick area, perimeter and angle problems.new
Quantity ComparisonTwo dot clouds flash — pick the bigger set. Trains your number sense.new
Make 24Combine four numbers with + − × ÷ to make 24. Solve as many as you can in 90 seconds.new
2048Slide and merge tiles until the board locks up. Board size sets the difficulty; highest tile is your score.new
SubitizingRead the number of dots at a glance before you'd have time to count. Measures how many you can grasp instantly.new
1-Digit AdditionAdd two single-digit numbers — solve as many as you can in 60 seconds.new
2-Digit AdditionAdd two two-digit numbers — solve as many as you can in 60 seconds.new
3-Digit AdditionAdd two three-digit numbers — solve as many as you can in 60 seconds.new
1-Digit SubtractionSubtract single-digit numbers — solve as many as you can in 60 seconds.new
2-Digit SubtractionSubtract two-digit numbers — solve as many as you can in 60 seconds.new
3-Digit SubtractionSubtract three-digit numbers — solve as many as you can in 60 seconds.new
1-Digit MultiplicationTimes-tables: multiply two single-digit numbers — as many as you can in 60 seconds.new
2×1-Digit MultiplicationMultiply a two-digit number by a single digit — as many as you can in 60 seconds.new
2-Digit MultiplicationMultiply two two-digit numbers — as many as you can in 60 seconds.new
Reasoning
8Logical and abstract problem-solving.
Sequence RecognitionSpot the pattern and choose the next number — solve as many as you can in 2 minutes. The difficulty climbs as you get them right and eases when you slip, so you settle at your level. Uses the Estimated-IQ test's series engine, so it doubles as training.new
Raven's MatricesFind the tile that completes the abstract 3×3 pattern — 2 minutes. The difficulty climbs as you get them right and eases when you slip, so you settle at your level. Culture-fair fluid reasoning, straight from the Estimated-IQ test engine — ideal training for it.new
Odd One OutEvery figure obeys a hidden relationship between its features — except one. Induce the rule, tap the figure that breaks it. Not pop-out: the odd one's features each appear elsewhere, only its pairing is wrong. 2 minutes; the difficulty climbs as you get them right and eases when you slip, settling at your level.new
Tower of HanoiRebuild the tower on the far peg. Solve it cleanly and the next tower jumps up; overshoot and it eases back — so it settles at your level. 3 minutes; your score is the largest tower you conquer.new
Balloon RiskEvery pump is worth a point, and every pump brings the burst closer. You are never told how much a balloon can take — and it changes each time you play.beta
ReversalOne of two cards pays out far more often. Work out which — then notice when it quietly stops being the good one, and let it go.beta
Mosaic SpeedrunPick a colour, then tap any region to fill it — merging it with its neighbours. Solve each board in the fewest possible moves; race to solve as many as you can in 3 minutes.new
Nonogram SpeedrunFill the grid from the number clues — every puzzle is solvable by pure logic, no guessing. Solve as many as you can before the clock runs out.new
Memory
12Holding information in mind and recalling it accurately.
Memory MatrixMemorize the lit tiles, then reproduce the pattern. Grid grows.new
Chimp TestNumbers appear then hide. Click them in ascending order.new
Color Match MemoryMemorize a color, then recreate it from memory with the sliders. Closer = better.new
Number MemoryA number flashes on screen. Type it back. Digits grow each round.new
Audio Number MemoryA number is spoken aloud. Type what you heard. Audio only.new
Backward Digit SpanA number flashes — type it back in reverse. Working-memory manipulation.new
Verbal MemoryMark each word SEEN or NEW as the pool grows. 3 lives.new
Operation SpanCheck a sum, hold a letter, repeat — then recall the letters in order. The arithmetic is there to occupy your rehearsal, which is what makes this a test of memory under load.beta
Change DetectionSquares flash, then reappear with one changed colour — tap the one that changed. Each round adds a square; how high can you go?new
Simon SaysWatch the colour sequence, then repeat it exactly. One more colour added each round — how far can you go?new
Corsi BlocksWatch the blocks light up in sequence, then tap them in the same order. Your spatial working memory span.new
N-BackA square jumps around a grid — tap when it lands where it was N steps ago. Starts at 2-back with N±1 lures; the load grows and the pace quickens as you keep up. The gold-standard working-memory trainer.new
Attention
7Staying focused, ignoring distractions, switching tasks.
Stroop TestA cue says COLOR or TEXT — respond to the ink or the word's meaning. Tests inhibition + switching.new
Trail MakingTap 1, then A, then 2, then B, and on alternately to the end. Two sequences held at once, with a switch on every move. A wrong tap costs time.beta
Swipe StroopAn arrow points one way; a word names another. Swipe where the arrow points and ignore the word. The conflicts come thicker the further you get.beta
Schulte TableTap the numbers 1→25 in order as fast as you can. Trains visual search.new
FlankerRespond to the middle arrow while the others try to mislead you, for 60 seconds. Arrows respawn as fast as you can answer — mistakes cost a timeout. Tests focus + inhibition.new
Finger PursuitKeep your finger on a ring that never stops moving. Thirty seconds of holding on.new
Task SwitchingAlternate between classifying numbers by size or parity, for 60 seconds. Measures cognitive flexibility and switch cost.new
Visualization
8Manipulating shapes, rotations and space in your mind.
Box VisualizationCount the total cubes in a 3D pile — including the ones hidden behind others.new
Paper FoldingA sheet is folded — including diagonal corner folds — then hole-punched. Pick how it looks unfolded. 60 seconds; the folds adapt to your accuracy as you go.new
Mental Rotation (2D)Pick the rotation of the flat shape — not a mirror. 60 seconds; shapes grow more complex the faster you go.new
Mental Rotation (3D)Rotate a 3D cube structure in your head and pick its match — not the mirror. 60 seconds; shapes grow the faster you go.new
The ChaseHunters pathfind toward you through a procedural arena — outmaneuver them as long as you can.new
Coordinate ShapesRead a set of (x, y, z) points and pick which 3D solid they form — as many as you can in 60 seconds. Spatial visualization.new
Maze SpeedrunDrag a path from start to exit, as fast as you can — difficulty-graded by maze size.new
SokobanPush every box onto a target — every board is solver-verified and depth-graded.new
Sensory
Auditory
4Processing sound, pitch and what you hear.
Hearing TestFind the highest pitch you can hear. Headphones recommended.new
Rhythm TapListen to a rhythm, then tap it back. Scored on timing accuracy.new
Audio LocalizationA sound plays around you in 3D — tap the direction you heard it. Headphones required.new
Sound MatchA tone plays at a hidden pitch. Hold it in mind through the silence, then recreate it — sweep the live tone until it matches and lock it in. Scored by how many cents you're off across 5 rounds.new
Vision
7Discriminating colour, contrast and visual detail.
Color Vision TestRead the hidden number in each plate of coloured dots. A quick colour-discrimination check.new
Peripheral VisionKeep your eyes on the centre cross. A dot briefly flashes — identify which corner it appeared in. Measures your visual field.new
Visual SearchFind the odd shape as fast as you can for 60 seconds — the grid grows and gets trickier every level. Tests focused visual attention.new
Motion CoherenceSpot which way a cloud of dots is drifting as fewer and fewer move together. Measures your motion-perception threshold.new
Vernier AcuityTell which way the top line is nudged as the offset shrinks. Measures hyperacuity — finer than 20/20 vision.new
Inspection TimeJudge which briefly-flashed line was longer as the flash gets shorter. A pure measure of perceptual processing speed.new
Flicker FusionFind the flickering square as the flicker speeds up. Measures your temporal vision threshold (best on a high-refresh screen).new
Movement
2Physical speed and motion control (coming soon).
Specialist
Language
4Words, vocabulary and verbal fluency.
Typing SpeedType the passage as fast and accurately as you can. Reports WPM.new
AnagramsUnscramble as many words as you can in 60 seconds — any valid anagram counts.new
Word FluencyName as many words as you can starting with a given letter in 60 seconds — any real word counts.new
Odd Word OutThree words share something; one doesn't. Find it — the link gets subtler as you go.new
Music
1Musical skills like pitch and note recognition.
Puzzle
6Rule-based games that combine several skills.
Sudoku SpeedrunClassic 9×9 Sudoku, difficulty-graded and always solvable without guessing.new
Minesweeper SpeedrunClear the board with pure logic — every board is solvable without guessing.new
Water SortPour to make each tube a single color — every board is solver-verified and depth-graded.new
Dot KnotConnect every pair of dots and fill every tile with non-crossing paths. Solve it fast.new
Rapid ConnectDraw one line from 1 through the numbers in order, filling every tile. Three rounds, fastest average wins.new
PipesRotate the tiles to connect every pipe from the centre with no loose ends. Solve it fast.new