Hi Biostrap team! :) As I’m a fan of different fitness- and health gadgets, first of all I'd like to say Thank You for new interesting and promising concept :) I’m using it for about 2 weeks (wristband and shoepod) alongside with my usual garmin 935, and here is my experience: - generally I don’t see now a reason to wear it during the day (it makes sense for me only at night for sleep tracking). If it were automatically checking my HRV during the day, then it could make sense to wear all the day (current manual checking is quite annoying) - HRV measurement (biometrics mode) is not accurate, however it can be linked to some movements or not correct posture during measurement. I think you need to integrate some advises and directions during this 2 minutes measurement, so people take it in a right way - app dashboard is nice but don’t provide simple summary: HRV before and after sleep, recovery rate? did I have enough sleep? Today's comparison with week average? etc. This simple data could be very useful to make decisions on today’s workouts and overall day planning - is it possible to measure also REM sleep? Light vs Deep sleep is very common to all trackers, while tracking REM is quite unique today.. and could be important data for athletes - wristband is not very comfortable Overall I like your approach to customer care and support, regular updates, communication etc. I hope you will move the same way, improve device and software, and we will happily use it everyday :) Thanks Igor