Lark can be used with the Apple Watch to automatically track activity data through the watch’s motion sensors. Just by linking your Apple Watch to your iPhone, you’re already collecting activity data. Lark reads the Steps from Apple’s Health app on your iPhone in order to calculate minutes active.
The Apple Watch is available through Apple’s website
Note: Make sure your Apple Watch device name includes the phrase “Apple Watch” somewhere in the text. It must be in English.
You can check the name and edit it by opening the Watch app on your iPhone, tap “General“, then tap “About“. The first field is for the “Name” of your Apple Watch, and you can edit it by tapping the name. See below: