Head impact, finally made visible.
Phreno started with a simple question: why can athletes measure so much, but have no record of motion measured at their helmet?
Athletes in high-impact sports deserve a record of the motion measured at their helmet. We build instruments that make detected impacts visible, so athletes, coaches, families, and clinicians have more context without treating a sensor reading as a diagnosis.
What we hold to.
Athletes first
We build for the people taking the hits. If it doesn’t help them, it doesn’t ship.
Honest about data
Phreno is an awareness tool, not a diagnosis. We’re precise about what our data does and doesn’t mean.
Quietly engineered
The best gear disappears. Our hardware is built to be forgotten on your helmet.
From research project to Phreno.
- Dec 2023
The idea
Phreno begins as a head-impact research project.
- 2024
First prototype
Dual-sensor hardware measuring linear acceleration and rotational motion.
- Oct 2025
The app
The Phreno companion app brings sessions, scores, and insights together.
- Today
Available to order
The Phreno Impact Sensor is available to order. Explore the sensor and companion app, or contact us about outfitting your team.
Meet the team
A small group of engineers, scientists, and athletes building the instruments we wished existed.
Nick Kasten
CEO
Nick Kasten, born and raised in Colorado, has firsthand experience with concussions from skiing, football, and other sports. Those experiences motivated him to help athletes keep a record of motion measured at their helmet, providing context without treating a sensor reading as a diagnosis.
His journey into tech and entrepreneurship began in 2020 with sneaker bots on Twitter, sparking his passion for software engineering. Later that year, he launched a software suite that helped over 1,200 businesses across Europe and Asia streamline operations. In 2023, he joined Flozy.com as Customer Success Lead, where he built and scaled a community of 40,000 businesses while contributing to website design and more. Now, he’s fully focused on Phreno while working toward his computer science degree.
Sebastien Hebbelinck
COO
A Castle Rock entrepreneur, aviator, and U.S. Navy Reservist. Sebastien co-founded his first company in high school and now co-leads Phreno’s operations.
Gene Kwak
CTO
A Senior Mechatronics Engineer and two-time patent holder. A founding engineer at Addressable, Gene leads Phreno’s backend and firmware.
Jack Pawlik
Operations
An analytical operator grounded in financial modeling. Jack has run full P&L and strategy for multiple FinTech and SaaS ventures, and studies Finance & Accounting at DePaul University.
Brody Almon
Content
A Denver-born filmmaker with five-plus years in photography and narrative film. Brody is here to tell Phreno’s story.
Sarah Nell Harp
Marketing
Sarah Nell is currently a senior at Montana State University, where she is pursuing a Bachelor of Science in Marketing with a minor in International Business and a Bachelor of Arts in Graphic Design. She is extremely passionate about how both design and marketing can create a strong brand identity. In her free time, Sarah Nell enjoys being outdoors, spending time with the people she loves, and practicing her faith.
Review the record.
See current availability and pricing for the Phreno Impact Sensor on the storefront.
Get the sensor