The free "tomigra" application allows you to listen to audio recordings intended for a given page of the Harmonia Publishing House book. It is a technology that facilitates the use of publications containing all kinds of sound elements, and at the same time makes the interaction with the book more attractive - it encourages the child to participate in play, increases his involvement, stimulates eyesight and hearing. You can use it everywhere: all you need is a book, a phone or a tablet and the w