Kraepelin Test

Train your focus & mental math with Kraepelin-style number exercises.

Kraepelin Test is a brain training app that helps you practice number addition exercises inspired by the classic Kraepelin method. Sharpen your mental arithmetic, build concentration, and track your progress over time.

Whether you want to train your focus, practice mental math, or simply challenge yourself with a fun cognitive exercise, this app gives you unlimited practice with real-time scoring and detailed performance insights.

📋 HOW IT WORKS
The app presents columns of single-digit numbers. Your task is to add each pair of adjacent numbers and enter only the last digit of the sum. Try to work as fast and accurately as possible before the timer moves to the next column.

This exercise trains:
• Sustained attention and concentration
• Mental calculation speed
• Work consistency and stamina
• Focus under time pressure
• Accuracy during repetitive tasks

🎯 KEY FEATURES
• Classic Kraepelin-style number addition exercise
• Adjustable session duration and difficulty
• Configurable column timing for flexible practice
• Practice mode for relaxed training without time pressure
• Detailed results with accuracy, speed, and consistency metrics

📊 RESULTS & PERFORMANCE TRACKING
• Accuracy percentage for each column
• Speed score (calculations completed per minute)
• Consistency graph showing your focus stability
• Error pattern insights to help you improve
• Historical performance tracking with progress charts
• Compare your scores across multiple sessions

👥 GREAT FOR
• Students looking to improve concentration and mental math
• Anyone preparing for timed number exercises
• Brain training enthusiasts who enjoy cognitive challenges
• People who want to build better focus habits
• Anyone curious about the Kraepelin method of cognitive training

⚡ TIPS FOR BEST RESULTS
• Start with shorter sessions and gradually increase duration
• Focus on accuracy first, then build speed
• Practice regularly — daily sessions of 15 minutes show great improvement
• Use the consistency analysis to spot when your focus dips
• Review your error patterns to understand common mistakes

✨ MORE FEATURES
• Clean, distraction-free interface designed for focus
• Dark mode for comfortable use day and night
• No account or sign-up required — start immediately
• Works 100% offline — practice anywhere without internet
• Lightweight and fast — no bloat, no ads interrupting your flow
• Regular updates with improvements

Download Kraepelin Test now and start building better concentration, faster mental math, and stronger focus today!