Health data & wearables
Ergon can read health data from two places. The first is your phone's health store: Apple Health on iOS, Health Connect on Android. The second is a directly connected app: WHOOP. Both are optional. Everything below is off until you turn it on.
Other wearables reach Ergon through the phone's health store. An Oura ring, a Garmin or a Polar watch writes its readings there, and Ergon reads them with the rest.
The phone's health store
Settings, then Apple Health (or Health Connect on Android). The store grants two permissions separately.
Workouts reads heart rate recorded during your erg sessions, for example from a watch, and attaches it to the matching workout. It fills in zones and heart-rate load on pieces rowed without a belt. A workout that already has usable belt data keeps it; imported heart rate never overwrites a captured stream. For live heart rate on the erg, a belt is still the better source. See Heart rate on your erg.
Readiness reads the morning signals: resting heart rate, HRV, sleep, VO₂max and body weight. One value per day each. They appear on Home each morning and feed the recovery trends.
There is no in-app disconnect for the store. Revoke Ergon's access in the store's own settings; the page links there.
WHOOP
Settings, then Connected apps. Connect opens WHOOP's own sign-in; authorize, and Ergon pulls the same morning signals from it daily.
Ergon reads one value per day per reading, never WHOOP's recovery score. A score is the vendor's model, not a measurement, and Ergon does not relay it.
When a connected app and the phone's store both report the same reading, the connected app wins. One source per reading, never an average of two. The page lists which source supplies each reading.
Disconnect revokes Ergon's access at the vendor and deletes everything Ergon imported from it. Readings from other sources stay.
Body weight
Body weight comes from the health store or a connected app, or you enter it in Settings under Body weight. The most recent measurement wins. Ergon uses it for watts per kilogram, calorie accuracy, and your Concept2 weight class.
What Ergon never reads
No location, no workouts from other sports, no clinical records. The five morning signals, in-session heart rate, and body weight are the whole list.
Write to support@ergon.training. A human reads every message, usually within one business day.