Description

Main screen provides a history of hear rate, colored to BPM
Pressing up takes you to a screen for measuring your heart rate and stress level. EKG simulator using your actual BPM. Stress is measured using HRV. It is the most accurate you can get with the access level the API will allow to the heart rate monitor.
Scrolling down take you to box breathing exercise with visual and voice guidance with adjustable volume. If volume set to 0%, guidance will include vibration. 
Work in the background and when watch take a regular measurement, if the rate is high, will trigger a 60sec read and should notify you if there is an issue and recommend breathing exercises. If everything is good, should return to watch face.

If you enjoy what I am making, consider a donation https://ko-fi.com/ericmccormick