Mobile Technologies, Applications and Software Design Joyster Mobile App by Paula Barcante Joyster is a mobile application for tracking mental symptoms alongside physical well-being and daily activities. Each entry takes less than thirty seconds to add, so daily records stay simple. The application reviews the collected data and shows which activities and foods have a positive or negative effect on well-being. Insights present trends and triggers in a clear format. Human and lifestyle illustrations appear throughout the interface, and a new illustration is shown on the dashboard each day. Joyster is designed for iOS and Android.