A breakthrough consumer health system.

Powerful Tests

Robust, highly sensitive lab-quality tests

Data Visualization

Elegant, easy-to-understand visualization of results


Well-written, consumer friendly health information


Interactive tools that empower consumers to take control

Meet Trak.

The definitive data-driven tool to measure, monitor, and improve men’s reproductive health from the comfort and privacy of home.

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Trak white profile spinning right cropped

The Trak App.

Improve your health, habits, and sperm to reach your goals.




Our team

Greg Sommer

Cofounder, Chief Executive Officer

Ulrich Schaff

Cofounder, Chief Technology Officer

Sara Naab

Cofounder, Marketing & Quality Director

Paul Manners

Chief Financial Officer

Jon Epperson

Research Associate

April Culver

Creative Associate

Raymond Naval

Web and Mobile Developer

Tiffany Quebral

Clinical Coordinator

Laura Fredriksen

Product Development Lead

Kirk Harmon

Web and Mobile Developer

Michael Eisenberg, MD

Medical Advisor


Karen Drexler

Board Member

Kevin King

Board Member

June Fallon

Board Member

Rich Brenner

Board Member

Trak at Health 2.0

Sandstone CEO, Greg Sommer, presents Trak at the cutting-edge Health 2.0 Conference

We’re making headlines

For a complete list of press, click here.