Decidz app Decidz is a simple app that helps people meet up and do things with their friends. Decidz is a simple app that helps people meet up and do things with their friends. This app takes the stress out of making plans and helps you turn your ideas into actions. I was responsible for the design of the user experience and user interface of the product, collaborating closely with developers and marketing team.The main goal was to meet customers’ needs and increase user engagement with a clean and easy-to-use user interface. Quickly create a new event and suggest times, places and other things you may need for your special event. You can invite friends from your contacts or simply send them a link which will work anywhere. Your friends don’t need the Decidz app to respond and get involved.