Mike Nosov

Building Quartenson - cognitive tools

About

Building Quartenson — free browser-based cognitive practice tools and Android apps for short focus, visual scanning, Schulte table, memory, and reaction-time exercises. Trying to keep the tools practical: short sessions, clear metrics, same-setup comparisons, and no medical or diagnostic claims.

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Gone streaking

Maker History

Quartenson ToolsFree cognitive practice tools for short focus sessions
Jul 2026

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Joined Product HuntJuly 5th, 2026

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1d ago

Quartenson Tools - Free cognitive practice tools for short focus sessions

Quartenson Tools is a set of free browser-based tools for short focus and visual-attention practice. Try Schulte tables, visual search, visual memory, peripheral awareness, and reaction time exercises. Each tool supports quick, repeatable sessions with clear metrics and same-setup comparisons. For deeper Schulte practice, the Android companion adds session history, pace analysis, heatmaps, trends, goals, and achievements. Built for practice and self-comparison - not diagnosis.