The VU University Ambulatory Monitoring System (VU-AMS) was developed by the department of Biological Psychology and the Technical Department (ITM) of the Faculty of Psychology and Education.
VU-AMS is not yet a startup. VU-AMS 5fs is a wearable stress monitor and can be used to measure :
Heart Rate / Inter beat Interval (IBI)
Heart Rate Variability (SDNN, RMSSD, IBI power spectrum: HF, LF)