Corde Magno reveals St John Eudes teachings and spirituality on the mobile platform. St. John Eudes used to say that "Jesus and Mary are so closely bound together that whoever loves the one cannot help but love the other." He saw devotion to Mary as a means of drawing closer to the Heart of her Son. Corde Magno aims at opening the Eudist community to the world. The application is now complete from a functional point of view, we are currently working on building content: lessons, scenarios, and evaluations. In the near future, English content will be added.