I used part of the "Laundry App UI Kit Sketch Resource" design that was designed by Satheesh Kumar at: https://www.sketchappsources.com/free-source/3397-laundry-app-ui-kit-sketch-freebie-resource.html to create a quick prototype

Design Credits: https://www.sketchappsources.com/free-source/4675-marier-shopping-ui-kit-ebizmirli-sketch-freebie-resource.html

This app can be used to tip a person or waiter or a friend or any one.

App Description: Win stuff by telling companies what you want. If you want to give feedback via a surveymonkey survey you'll be entered into a draw for a $50 gift card of your choice. https://www.surveymonkey.com/s/WKDK9PS Cheers, Justin