Privacy policy
Last updated 6 November 2026. Draft for the beta: it will be reviewed before the public release.
Coach Link lets a coach see a client's training data from the client's watch. This page says what is collected, who sees it, and how to remove it.
In short
- A coach sees a client's data only after the client accepts that coach on the watch.
- Before the client accepts, no readings are stored.
- Workout summaries stay until the coach deletes the client. Heart rate detail is deleted after 90 days.
- We do not sell data and we do not show advertising.
- Coach Link is a training tool, not a medical device.
What we collect
About coaches: name, email address and a password (stored only as a hash).
About clients, written by the coach: a name and notes.
From the client's watch, only while the client is connected to a coach: heart rate, steps, stress, respiration, Body Battery, heart rate zones, resting heart rate and VO2max from the watch profile, and where the watch provides them, calories, distance, cadence, speed, temperature, altitude, blood oxygen, power and heart rate variability. We do not collect location (GPS).
From the coach's use of the app: the workouts we record, what the coach writes about them, and standard server logs. Health values are kept out of the logs.
Why we use it
To show the coach the client's state live, to keep a history of workouts, to draw progress charts, and to work out advice for the coach from recent workouts. The advice is guidance, not medical advice.
Who can see it
Only the coach the client accepted on the watch. Another coach cannot see it. People who run the service can reach stored data only to operate and secure it.
We use hosting and infrastructure providers to run the service. We do not sell personal data.
The client's control
The watch asks "Connect to the coach?" for every connection and the client can decline. The client can end the workout on the watch at any time, and closing the app stops the sending.
A client who wants their data removed should ask their coach, who can delete them as described below.
How long we keep it
- Workout summaries (duration, averages, time in zones and similar): until the coach deletes the client.
- Heart rate detail behind the workout charts: 90 days.
- Sessions that ended or never connected: removed after 24 hours.
- Coach accounts: until they are deleted.
Deleting data
A coach archives a client first, then deletes the client from the archive. Deleting removes the client, their workouts, heart rate detail and notes for good.
Security
Connections use HTTPS. Passwords are stored hashed. Each watch has its own access token, stored only as a hash. No system is perfectly secure, and we will tell affected users if something goes wrong.
Changes
We will update this page when what we do changes, and change the date at the top.
Contact
Questions or requests about data: coachlink@ab.team.