Samsung Galaxy Watch3
TIZEN OS
1. Find "Discover"
On your phone: Press Galaxy Wearable.
On your phone: Press Discover.
2. Find app
On your phone: Press View more below the required category.
On your phone: Press the search field.
On your phone: Key in the name or subject of the required app and press the search icon.
3. Install app
On your phone: Press the required app.
On your phone: Press Install and follow the instructions on the screen to install the app.
If you've selected a paid app, press the price to install the app.