D.O.Y. is an app created for an experimental program for middle schoolers in Argentina. Based on research by Carolina Klos, the app encourages forming a habit of giving three different forms of gratitude (D-O-Y) at an early age through the use of brief diary entries that become floating circles. Through daily submissions, the child is able to see their moments of gratitude accumulate, and they can always press one of the circles and remember those moments.