Start with a 5×5 grid
Start a 5x5 Schulte Table directly from the home page.
Timer
0.00s
Errors
0
Next target
1
The home page starts with the fastest entry point. These tools add the other main dimensions.
The home grid observes completion time and errors in this 5×5 task. It does not measure peripheral vision, reading ability, intelligence, or health. Grid size, display, input method, and familiarity all affect a run.
Schulte history stays in this browser. The site uses Google Analytics for aggregate visit information, while tool scores are not uploaded by the task code; the privacy policy explains the distinction.
Compare recent sessions on the same device and the same settings.
Use recent averages before you overread one lucky best score.
History stays in the current browser, so the tool works best for personal comparison.
Use these paths when you want a broader routine instead of one quick test only.
For stationary scanning, use Schulte Table or Visual Search. For rule conflict, choose Stroop or Flanker. For a simple signal-to-action interval, use Reaction Time. When information must be retained, choose simultaneous visual positions, ordered sequences, digits, or Dual N-Back according to the mechanism you want.
Sustained Attention monitors low-frequency targets for longer periods. Multiple Object Tracking maintains identities through motion. Symbol Search repeats present/absent judgments in short rows. Pomodoro and breathing tools support a focus routine but do not produce cognitive ability scores.
Compare several recent records from the same tool, mode, settings, device, and input method. One fastest or highest result can reflect chance and should not be interpreted as a change in overall ability.
Each tool explains its denominator and validity flags. Focus loss, anticipatory responses, low frame rate, and interruption are paused or flagged according to the task.
The tasks are browser practice, self-observation, or interactive demonstrations. They do not diagnose ADHD, memory disorders, or other conditions and do not output IQ, brain age, age norms, or clinical cutoffs.
If attention, memory, or health concerns affect daily life, use appropriate professional support rather than relying on one web score.
These questions stay tied to the visible content on this page.