About Us

Learn more about VAY, our story, our team, and find rewarding careers.




VAY was founded in 2018, with the goal to create a fully virtual personal coach.


The VAY Fitness Coach launched on the App and PlayStore in June 2019 as the first end-consumer product using monocular human motion analysis.
Shortly after, we realized that a split focus on this novel computer vision technology, movement science, and user experience/content/community building is not feasible. Simultaneously, we received many requests for our leading technology from other companies in the fitness & health sector. Our team then decided to put all focus on combining computer vision and human biomechanics to democratising professional motion analysis.


With our novel way to teach a computer to understand human motion and movements, we are building the biggest and highest quality movement library for our business clients to use in a plug-and-play manner.


In September 2021 VAY was acquired by Nautilus Inc, a public fitness company based in Vancouver, Washington, USA. Our technology will help digitally transform Nautilus and deliver a high level of personalization to their product portfolio. Coming full circle VAY will support in providing real-time feedback, repetition counting, form tracking, and customized digital coaching. Check-out the press release here.
Moving forward, VAY will continue to work with current and new clients, and we will continue to have a dual focus on both fitness and health solutions to enhance physical wellness.


Our mission is to democratize professional human motion analysis through readily available consumer devices. We know that by making lab-grade human motion analysis accessible to everybody, we will enable novel prevention, diagnosis, and treatment methods for musculoskeletal conditions (MSD) and increase physical health.



Our vision is to leverage our technology, to give every person on the planet more healthy years. Our technology will become a major building block to enable new digital approaches that promote physical activity, increase performance, predict risks for injuries or disorders, and to provide feedback for more effective and faster treatments.

Leadership Team

Joel Roos

CEO & Founder

ETH robotics graduate with a focus on computer vision.

Ben Simon

COO & Founder

University of St. Gallen graduate with a focus on strategy and business development. 

Patrizio Bonzani

CTO & Founder

System software architect with a focus on development processes.


PD. Dr. Alex Ilic

Executive Director ETH AI Center, formerly founded Dacuda & led Magic Leap Switzerland

Sophie Lamparter

Founder and CEO of Dart Labs, previously Deputy CEO at Swissnex San Francisco.

Oliver Stoller

Executive Director of RESC ETH Zürich (Rehabilitation Engineering and Science).

Let's Talk

Invest in innovation and take steps towards digitalization. Increase your user retention with high personalization.

  • Cutting-edge motion capture and motion analysis APIs

  • Lightning-fast integration - Get going within a day

  • Increase your user retention

  • Cross-platform support

  • Access to 80+ exercises