<ul><li>All Apple Watch models include a stock Calculator app with features for tipping and bill splitting.</li><li>You can adjust tip percentage and number of people involved in the bill.</li><li>To use, launch Calculator app, enter bill amount, tap TIP for percentage adjustment, and tap People to split the bill among a group.</li><li>Customize calculator layout by going to Settings ➝ Calculator and selecting Tip Function instead of Percent.</li></ul>

How to Split a Bill and Tip on Apple Watch

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