You can completely close or kill Apple Watch apps at any time by force quitting the app.
Method is different. But the idea is the same as the iPad or iPhone. Also this method is very simple.
How force quit or kill Apple Watch apps
Note: Before starting, you need to be in the app to force quit.
- Press and hold the Apple Watch side button until the shutdown screen appears.
- Now press the Apple Watch side button again to force quit the active Apple Watch app.
Force quitting the application did not solve your Watch issues, Always try to reboot your Apple Watch. Rebooting or resetting solve most of your Apple Watch issues.