Train sharper focus, right from your browser
Classic cognitive training paradigms grounded in published research. Runs in your browser, data stays on your device.
Your brain is the master switch. X is everything it touches.
We don't clone you — we help you see the Brain + X connections.
Assess → Dashboard
21 cognitive tasks + 18 scales, synthesized into a 6-module brain dashboard
Apu · Long-term companion
An AI coach that sees all your data and connects the dots in plain language
4-week training plan
Aerobic, coordination, eye movement, breathing, mindfulness & cognitive — evidence-based mix
All data lives in your browser (localStorage). Nothing uploads. We're not a diagnostic tool.
Training modules
Pick one and get started
Schulte Grid
Visual search · Sustained attention
Tap 1 to N in order as fast as you can — train your attention span and peripheral vision.
CPT (Continuous Performance Test)
Sustained attention · Impulse control
Watch letters on the screen for a few minutes. Press space for anything except X.
Flanker Task
Distraction resistance · Inhibitory control
Respond to the center arrow and ignore the flanking ones.
Stroop Test
Conflict monitoring · Inhibitory control
Pick the INK color, ignore the word — the classic interference task.
Simon Task
Spatial compatibility · Inhibition
Red = left key, blue = right key — ignore where it appears.
Multiple Object Tracking
Distributed attention · Dynamic tracking
Track the highlighted targets as they mix with distractors and move.
Attentional Blink
Rapid visual attention
Catch a digit and an X in a rapid letter stream.
Go / No-Go
Impulse control · Response inhibition
Tap on green circles — withhold on red squares.
Stop-Signal Task
Response inhibition (advanced)
Press the arrow direction, but STOP when the red signal appears.
Task Switching
Cognitive flexibility · Executive function
Alternate between two simple rules — train task-set switching.
Trail Making Test
Visual search · Task switching
Part A: connect 1-25 in order. Part B: alternate digits and letters.
Tower of London
Planning · Executive function
Move the colored balls to match the goal in the fewest moves.
N-Back
Working memory · Fluid intelligence
Does the current item match the one N steps back? — the brain-training icon.
Digit Span
Verbal working memory
See a string of digits, recall in order — the concise classic.
Corsi Block
Visuo-spatial working memory
Tap blocks back in the order they lit up.
Visual Patterns Test
Visual short-term memory
Remember the grid pattern, then reproduce it.
SDMT — Symbol Digit Modalities
Information processing speed
Match symbols to digits as fast as you can in 90 seconds.
Verbal Fluency (Animals)
Semantic retrieval · Executive function
Name as many different animals as you can in 60 seconds.
King-Devick Number Reading
Saccadic reading speed · Concussion screen
Read three number cards as quickly as possible, with optional AI voice scoring.
1-Minute Oral Reading
Reading fluency · Dyslexia screen
Read a short passage aloud for one minute; AI estimates accuracy, omissions, and substitutions.
Mental Rotation
Spatial ability · Visualization
Pick the two rotated versions of the target; ignore mirror images.
Delay Discounting (MCQ)
Impulsive decision · Self-control
Choose between 'smaller now' and 'larger later' across 27 questions.
SART with Mind-Wandering Probes
Sustained attention · Meta-awareness
Press on every digit except 3. Occasional probes ask where your mind went.