There’s an iOS companion app for Grosh for Apple Watch that is installed on your iPhone. It has one purpose in life: to login to your Grosh account. So install the iOS app, login to Grosh and you will see “Logged in succesful, your name” on the login screen. When you start Grosh on the Apple Watch, the watch will show “Login required”. Then after some seconds, the iOS login screen will shown “Logged in on watch” and the watch will shortly after show the contents of your first shopping list.
