Heart Rate Monitor - Pulse App

Measuring your pulse takes seconds here: rest a fingertip on the camera lens and the app reads the tiny colour changes caused by blood moving through your finger, then reports beats per minute. No strap, no watch and no additional hardware are needed. What matters more than any single reading is the record. A resting heart rate on its own tells you very little, because it varies with caffeine, sleep, stress, illness, temperature and what you did an hour ago. Measured at the same time each day over weeks, it starts to mean something. A resting rate that drifts downwards over a couple of months is one of the clearest signs that regular exercise is doing its work, and one that climbs without explanation is worth mentioning to a doctor. The app keeps that history and presents it as charts, which is the part that turns a curiosity into information. Readings can be tagged by context, before or after exercise for instance, so comparisons are made between like and like. Insights accompany the numbers with general guidance. It is used by more than ten million people, and it is free. It is not a medical device, and it should inform a conversation with a doctor rather than replace one.