Quartenson builds free browser-based cognitive training tools and focused mobile apps for short, measurable practice.
The current ecosystem focuses on Schulte tables, visual scanning, visual awareness, reaction time, focus metrics, and practical training routines.
- Free Schulte Table Trainer — practise 3×3 to 7×7 Schulte tables, track time and mistakes, and compare local results.
- Visual Search Test — find one target among similar distractors and review search time, accuracy, and clean rounds.
- Reaction Time Test — respond to one visual signal and compare median, fastest result, spread, and false starts.
- Peripheral Awareness Trainer — practise noticing brief off-centre targets while completing a central task.
- Schulte Vision Trainer — Android app for structured Schulte table practice, session history, pace review, heatmaps, achievements, and progress tracking.
- What Is a Schulte Table?
- Schulte Table Average Time
- How to Improve Schulte Table Time
- How to Use Schulte Tables Correctly
- How to Measure Focus
Quartenson tools are recreational browser exercises and educational resources.
They are not medical tests, diagnostic tools, eyesight assessments, ADHD assessments, professional cognitive evaluations, or driving-safety assessments.
- Website: https://quartenson.com
- Tools: https://quartenson.com/tools
- Blog: https://quartenson.com/blog
- Apps: https://quartenson.com/apps
