Apple Watch Series 3
Installing apps from App Store on your Apple Watch
You can add new functions to your Apple Watch by installing apps from App Store.
On your phone: Press Watch.
On your phone: Press Search.
On your phone: Press the search field.
On your phone: Key in the name or subject of the required app and press Search.
On your phone: Press the required app.
On your phone: Press GET and follow the instructions on the screen to install the app.