Athalyze

Athalyze is a training log for athletes who wear more than one device. It runs on iPhone, iPad, Apple Watch and Mac.

Run with an Apple Watch and a Garmin, or ride with a bike computer while wearing an Oura ring, and Athalyze merges the recordings into one activity. It works with Apple Watch, Garmin, Whoop, Oura, and Google Health devices like Pixel Watch and Fitbit. For each metric it picks the most reliable data, and it keeps the originals so you can see where every number came from.

Multi-Device Merging
• Recordings of the same workout are combined automatically
• Set device priority for each metric if you prefer one source
• Compare devices on one chart, each in its own color. Tap a swatch to show or hide it
• Import FIT files, including Garmin developer fields like core body temperature
• See when a recording switches source, such as heart rate moving from Apple Watch to AirPods Pro
• Press play on the map to fly along your route while the charts follow
• Two Apple Watches, or a watch and a sleep app like Pillow or AutoSleep, each keep their own heart rate, HRV, sleep and vitals

Vitals
• Last night's HRV, resting heart rate, respiratory rate, SpO2, skin temperature and sleep on one screen
• HRV is shown as RMSSD, the measure Garmin, Oura and Whoop use, including Recovery HRV from the newest Apple Watch models. You can also view it as SDNN if your devices record it
• Each vital is compared with your own normal range, and you get a morning alert when one falls outside it
• Steps and blood glucose are charted against your normal range too

Training Load
• Fitness, Fatigue and Form from every workout, whichever device recorded it
• Scored from power, pace or heart rate, with thresholds estimated from your own efforts
• Form updates through the day and projects forward to show what a rest day would do

Records and Analysis
• Best efforts from short intervals to ultra distances, and best power from a few seconds to an hour
• Filter by sport and time period
• Power…