What you can’t measure, you can’t improve.

The flowPATCH is a wearable, non-invasive patch that captures an athlete’s sweat and interprets key bio-markers in real-time, starting with electrolytes and total body fluid loss. We provide our users with personalised recommendations that allows them to improve their performance.

Flow Patch
Lab grade performance
Lab grade performance

Until now, wearables have used impedance to acquire vitals. We take the novel approach of using microfluidics to capture sweat in a clean environment. The result: lab grade accuracy.

Our unique approach
Our unique approach

Our sensor team has a combined experience of 30+ years in developing electrochemical biosensors. We take this wealth of knowledge and package it into a 3cmx3cm recyclable patch.

Real-time processing
Real-time processing

Combining microfluidics and wearable electronics, our proprietary non-invasive patch captures athlete’s sweat and interprets key bio-markers from it in real-time.

State of the art hardware, cutting edge software.

We combine our unique flowPATCH hardware with world leading modelling to provide you with the tools you need to improve.

FlowBio App
  • AI Recommendation EngineAI Recommendation Engine

    Using world class modelling, we are able to accurately predict your biomarkers in upcoming workouts. By combining these with your supplement preferences, we can give you recommendations before, during and after your workouts.

  • Performance InsightsPerformance Insights

    Study your previous performances with our insights tool. In addition to tracking your workouts over time, we show you problem areas and provide tailored recommendations on how to improve.

  • Fitness App IntegrationsFitness App Integrations

    You can connect all of your favourite fitness apps to Flow Bio including Garmin, Polar and Apple Health. We then correlate your biomarkers with your workouts, allowing us to provide you with more meaningful insights.

The team to deliver.

Stefan van der Fluit and Giovanni Rovere shared a vision for the bio-informatics future: people would be using wearable devices to get a real-time picture of what is going on in their body. Using Giovanni’s expertise in developing wearables and Stefan’s extensive knowledge as an athlete, Flow Bio was born.

Stefan van der Fluit
Stefan van der Fluit
CEO & Co-founder

3x founder. Led growth at Facebook and 2018 Dutch national Ironman age group champion.

Dr. Giovanni Rovere
Dr. Giovanni Rovere
CTO & Co-founder

Developed multiple biomedical wearables, ETH Zurich PhD graduate. Expert in acquiring data from the body.

Alex Dobinson
Alex Dobinson
Senior Product Engineer

2x founder, 7+ years experience in machine learning and software engineering.

Dr. Barry Silver
Dr. Barry Silver
Senior Chemical Engineer

15+ years experience in developing biosensors. Worked at some of the leading biosensing research groups.

Calum Stewart
Calum Stewart
Early Access Program Manager

Born and raised in Toronto, playing ice hockey and running cross country. 1 mile in 4:45.

Dr. Ali Yetisen
Dr. Ali Yetisen
Science Advisor

Award winning senior lecturer at Imperial College London in bio-medical sensors.

Dr. Sam Cheuvront
Dr. Sam Cheuvront
Science Advisor

Former US army research physiologist, published over 150 papers on hydration.

Tim Don
Tim Don
Product Advisor

Elite triathlete. 4x Olympian, 3x World Champion, Ironman world record holder.

Early Access

Get access before public launch.

Athletes on the early access program get to use and test the device well in advance of our public launch.

Request Early Access