In the Calculator app on your Apple Watch.
Enter the total amount of the bill, then tap Tip.
Turn the Digital Crown to choose a tip percentage.
Tap People, then turn the Digital Crown to enter the number of people sharing the bill.
You see the tip amount, the total amount, and how much each person owes if the bill is split evenly.
Note: The Tip feature is not available in all countries or regions.
Note: If you remove the Calculator app from your iPhone, it’s also removed from Apple Watch.