Biostrap review

Wearing a clinical-grade photoplethysmography (PPG) sensor for a month

Nov. 15, 2017 - Willem L. Middelkoop

Most wearables (smartwatches, fitness trackers, etc.) use very basic sensors to capture heart rate. Their signal is binary: just counting beats. Biostrap is different, instead of just checking pulses, it captures a high-fidelity PPG waveform. These waveforms are the same kind that doctors use, making me wonder what I could learn from them!

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Heart rate variability (HRV) as measured and explained by Biostrap

Charging Biostrap is easy - Battery lasts up to 5 days

The box contains three straps, charging cable, charger and two sensors

The Biostrap PPG sensor is about as thick as a watch

Apple HealthKit aggregating data from different sources and devices

Biostrap sensors size compared to an Apple AirPod

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