Kruxmind: Speedcubing Tracker

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About this app

Kruxmind is a speedcubing timer and tracker that incorporates a unique performance dimension based on peer-reviewed research. Record your solves, monitor your growth, practice your algorithms, and evaluate the performance skills involved in your solving.

⏱️ THE TIMER, PERFECTED
- WCA-style 15-second inspection with vocal prompts and precise penalties (+2 / DNF)
- Random scrambles and a neat, distraction-free solving interface
- Support for Stackmat timers
- STM-based measurements aligned with competition criteria

📊 TRACK EVERY DETAIL
- Comprehensive solve history, averages, and progress tracking over time
- Analysis of phases and reconstruction of solves
- Personal bests and daily challenges

🎯 ALGORITHMS & TRAINING METHODS
- Libraries for CFOP, OLL, and PLL
- Spaced-repetition trainer to engrain algorithms in memory
- Predictors and solvers for CFOP

🔬 THE PERFORMANCE TOOLKIT — grounded in science, not marketing
Kruxmind draws its inspiration from Zarei et al. (2025), a peer-reviewed study of elite cubers published in Experimental Brain Research. It incorporates the same five standardized tasks used in the study:
- Tower of London — planning
- JLAP-15 — visuospatial judgment
- Memory Match — spatial working memory
- Fine Motor Skills — motor control
- Cube planning and execution
We measure your performance on these tasks — the performance factors connected to cube solving according to research.

✓ WHAT WE ACTUALLY OFFER
- Kruxmind measures and exercises planning, visuospatial skills, spatial working memory, and fine motor control
- Track your performance on each task over time, alongside your solves

✕ WHAT WE DON'T PROMISE
- That cubing "increases your intelligence," elevates your IQ, or enhances academic, mathematical, or creative skills
- That practicing these tasks translates to unrelated skills (far transfer)
- Any validated clinical applications

⚠️ TRANSPARENT SCOPE
Kruxmind evaluates performance rather than brain activity. We do not employ EEG methods. Replicating the Zarei battery lets us exercise the same standardized abilities — it does not imply that we replicate its neural outcomes. Correlation does not equal causation: while these skills correlate with cube solving, exercising them does not inherently enhance your intelligence or everyday life. Our commitment to scope honesty is a strategic design choice — setting us apart.

🌍 Available in English, Spanish, Portuguese, and German.
📚 Based on: Zarei et al. (2025) · Dresler et al. (2017) · Sala & Gobet (2017).
Speedcubing timer & tracker with a science-based performance layer.
Updated on
Aug 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info and App activity
  • Data is encrypted in transit
  • You can request that data be deleted
  • Committed to follow the Play Families Policy

What’s new

• Faster app startup with a smoother splash screen
• Smart cube support (GAN, MoYu, QiYi) in the Daily Challenge: auto start and stop with your physical cube
• Stability fixes: launch crash resolved
• Performance analysis, trainers and full algorithm library in EN/ES/PT/DE