Growth Data That Powers Better Coaching

Welcome to MatCalc2.0

MatCalc2.0 is a giant leap forward — a step-change in the predictive power of the Kamis-Roche calculator that we all know, love, and use in practice.

Why “2.0”?

Because we’ve taken a simple height-and-weight calculation and built something much more powerful:

• Predict key milestones in growth with greater accuracy
• Flag surface-level risk factors before they appear and start compounding
• Continuously improve through an evolving normative dataset and machine learning

Just like Web1.0 became Web2.0 — and now Web3.0 — MatCalc2.0 is evolving. We are building tools to give coaches and parents smarter forecasting and better squad management.

Where It Started

MatCalc was born from my curiosity as a coach.

Over 15 years working with athletes, I found myself asking:

• “They are at 82% predicted adult height… but how long until they hit 85% or PHV?”
• “If I wait even a month to test again, will I miss the risk window?”
• “How long does PHV actually last? Is it different for everyone?”
• “When can I take advantage of post-PHV training opportunities?”

I knew we could do more — so I set out to find a better answer.

Enter George. The Wizard.

Collaborating with George has been a journey — and we’re thrilled to bring the results to market.

What Is MatCalc2.0?

MatCalc2.0 has two views:

• Parent view — where parents manage athlete profiles and access
• Coach view — where coaches manage teams, track history, and upload data

Parents link to your organisation via a secure code. Once connected, you can:

• View full test history for each athlete
• Add your own test results immediately
• Bulk upload 50+ measures in one click
• Share data with parents and export it instantly

Built for Coaches Like You

Our coaches’ platform is a game-changer for squad management. You can now group athletes by:

• Age group
• Biological age
• Maturation status

You’ll also receive automated retest reminders — so no milestones are missed.

Our Philosophy: Athlete-Centred. Parent-Owned.

We’ve designed MatCalc2.0 with best-in-class coaching tools and the highest data privacy standards:

• Parents create and manage athlete profiles
• They control who sees what
• Unlinking removes coach access — but parents retain full history
• This approach aligns fully with GDPR for Category 1 children’s data

Why That Matters

We understand some organisations want to store athlete data directly.

But doing so independently can put your team at legal risk. MatCalc2.0 is built to solve that:

• Industry-leading GDPR compliance
• Built with input from legal and data security experts
• Secure, scalable, and parent-controlled

Thanks for being part of this with us. We’re excited for what’s ahead.

— The MatCalc Team