Find an answer by topic

Tool, Score, and Privacy FAQ

Start with the action you want to perform, then read that page's rule, metrics, and limits. Different tasks cannot be merged into one focus score.

These answers describe the site's real implementation. Tool-specific invalid sessions, scoring denominators, and input methods remain defined on the relevant page.

FAQ Groups

Choosing and Using a Tool

This group stays focused on one practical usage theme.

Choose by action: Schulte for ordered scanning, Stroop for word/color conflict, Reaction Time for one signal response, Attention for target/no-go decisions, a matching memory task for retention, and a timer for real work blocks.

Results and Limits

This group stays focused on one practical usage theme.

No. Read errors, accuracy, and validity flags and compare several recent sessions with matching settings.

Local Data and Privacy

This group stays focused on one practical usage theme.

They stay in the current browser's localStorage by default; there is no score-account database. Clearing site data or changing device removes or separates them.

Advertising and Editorial Content

This group stays focused on one practical usage theme.

They must not cover or imitate Start, Continue, Retry, Result, or navigation controls. AdSense code is also excluded from 404 and trust/legal pages.

Related articles

Read supporting explainers and practical guides.