Love the flow! It's the sweet spot between science and meditation. I bought the monitor from Amazon and within less than a day I managed to go from low hrv to getting the highest score (1000) and it's really de-stressed me already. Something just clicked with the bio-feedback. It's like learning to use a bit of your body you didn't know you had, it's dark magic indeed! Can't speak for athletic training but for those of us with sympathetic nervous system dominance it's a god send. Like the app had hidden all the complex data head stuff and just provides you with a simple biofeedback dashboard. If you're a data head the flow device works with EliteHRV too. My only criticism with the app is that the graphs update every heartbeat, which gives it a jerky animation. If you're feeling a bit jumpy then this can feel a bit edgy. If this animation could be smoothed out just a tad, so there's a softer transition between beet updates I would be over the moon.
New Video Tutorial - Quick Start
Most Precise Heart Rate Monitor Ever + Unlimited Measurements and Records.