Easy to understand, easy to use: 1. Calculate tip2. Split bill3. Round up/down4. Remember 4 tipping habitsTip & Habit, as the name implies, can not only calculate tip, split bill, but also can remember your tipping habits. After all, we would like to tip less or more than 15% of the check in different times, at different places, or with different moods.Right? 🙂