The University of Minnesota TTE mobile app allows physicians, students, and the general public to access a real, animated human heart for training transthoracic echocardiography. This simulator allows students to understand the controls of a TTE probe along with the ability to see how the two-dimensional image of an echo screen is mapped to the three dimensional heart. This simulator can be used to train for TTE certifications and improve the general abilities of all TTE users by training whenever and wherever they want for free.