Mightifier is a teacher’s tool to help children master their social and emotional skills. The students learn to give each other positive feedback by first selecting a character strength, e.g. fairness, teamwork or honesty, which they think describes their fellow classmate the best, and then explain their choice. The child-oriented presentation of the app in a cartoon-like superhero style motivates the students to participate. The animated characters of Mighty Bear and his bird friend are mindfully designed to the detail and add wit and charm to the app.