Gratuitas – Smart Tip Calculator is a customizable tipping tool that helps you determine a tip based on both the quality of the meal or service and the specific service you received. Start with a baseline tip percentage, rate the overall experience, and evaluate individual aspects of service such as attentiveness, timing, friendliness, table maintenance, accommodations, and more. You can also add your own rating categories to reflect the things that matter most to you. Gratuitas combines these ratings to calculate a personalized tip percentage, tip amount, and total bill—putting the decision about what to tip in your hands.