[weakfish]

For me, I want an open API I can pull my data from. Last I checked, you have to be a business to use Garmin's API.

Apple certainly doesn't let you.

My goal is to have a cron that runs on my homelab that pulls my health data into a DB I own, from various sources, and visualize it in Grafana.

[colingauvin]

There's a Python API that's "unofficial" but has worked well for me for ages. I've got it hooked up to NextCloud tables and it imports everything once a day. I've now got years of queryable metrics in NC.

[mikestew]

Apple certainly doesn't let you.

There are several apps[0] off the top of my head that pull data from Apple's HealthKit. Apple even has a framework for it: HealthKit. That said, I've never written to that API myself, but it observational evidence indicates that you can pull data from Apple just fine. The app I use to pull data off Apple and ship to Strava says as much.

[0] RunGap and HealthFit

[asats]

you can use https://github.com/cyberjunky/python-garminconnect to pull your data from garmin, I've been using it daily with no issues

[deivid]

Depending on what data you want, you can try Withings watches. I'm currently reversing the protocol and it mostly works.

[rich_sasha]

Polar has an API where you can get more or less anything out. That bit is fine - sadly you can't put things in (like virtual cycling, or any activities not recorded on the Polar).