We're redefining recovery with our science‑backed, privacy‑focused, human optimization software.

Most apps that track your body treat your data as theirs. They send it to their servers, share it, train models on it, and sell insights back to you as a subscription. We don't think that's right.

We built Flow with three principles in mind. Your sensitive health data stays on your device. The App is free, and always will be. We will never sell your data to anyone.

Founded in 2019 by Katarina Johnson-Thompson (Olympic medalist and World Champion heptathlete), James Morrison Steward (engineer and triathlete), and Willum Ogden (former Everton sports therapist).

We built this for ourselves, and for anyone serious about how they train and recover. Whether you're chasing a world title or a personal best at any level, the App helps you understand what your body is telling you and perform to your optimum.