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Apple Watch with Runsei

Status: Available

Runsei puts your planned sessions on your Apple Watch as guided workouts.

What Runsei reads from it

  • Your runs reach Runsei through Apple Health, not through this connection. See the Apple Health page.

What Runsei can send to it

Planned sessions: yes.

  • Your next planned sessions, each on its day, with their steps and the target pace or heart rate.
  • In the iPhone app the session’s menu offers Send to Apple Watch. The workout moves if the plan moves.

How to connect, step by step

  1. Open the Runsei app on your iPhone (a recent build, iOS 17 or newer).
  2. Open Profile, then Data hub, find Apple Watch and tap Turn on.
  3. Allow the permission iOS asks for.
  4. Open a planned session’s menu and choose Send to Apple Watch.

What does not work

  • Apple Watch Series 3 and earlier cannot receive planned sessions.
  • Step names on the watch need iOS 18 on the iPhone.
  • A session with no structure (a rest day, a strength session) does not become a workout.
  • Nothing is sent from the web: it needs the iPhone app.
  • Apple Watch needs an iPhone. It cannot pair with an Android phone or connect to Health Connect; with Android, use a Wear OS watch or Garmin.

What you need

Phone
An iPhone on iOS 17 or newer.
App build
A recent build of the Runsei iPhone app (the watch feature is native code, so an older install cannot do it).
Watch models
Apple Watch Series 4 or later, SE, or Ultra, on watchOS 10 or later. See the compatible devices below.

Compatible devices

Last checked 28 Oct 2026. Tested means someone used that exact model with Runsei. Should work means the code or the maker’s own pages say it does, not yet tried on that model. Not supported and Not known are what they say.

  • Apple Watch Series 6 and later, SE (2nd generation) and later, every Ultra

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • Apple Watch Series 4, Series 5, SE (1st generation)

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    Yes
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

  • Apple Watch Series 3 and earlier

    Should work
    Runs to Runsei
    Yes
    Sessions to the watch
    No
    Heart rate
    Yes
    Sleep
    Yes
    HRV / recovery
    Yes

Not tested yet

  • Series 4, Series 5 and SE (1st generation): not tested yet.
  • watchOS 27 support: not checked yet.

More

Brand names and logos belong to their owners. Runsei is not endorsed by, sponsored by or affiliated with them. Health data you connect is stored in the EU and is never used to train anyone’s models.