3 posts found
Your smart ring does not count your breaths. It counts the ripples that breathing leaves on your heart rate, then runs statistics to guess how many times you inhaled. The method is real. The precision is not.
Most wearables compute a stress score by running your heart rate through a black box. Pulsyn does the same thing, but the weights are public, the math is in the repository, and the app tells you exactly how confident it is. Here is the full breakdown.
Your smart ring is guessing for the first two weeks. Every sleep score and recovery metric is built on population averages until the algorithm learns what normal looks like for you. Most companies do not tell you this clearly. Pulsyn does.
