Electronic version of the hymnal of the Czech and Moravian dioceses, including both supplements. The application contains texts and notes of individual prayers and songs. The application supports full-text search, changing the font type (serif/serif), automatic mute, night mode, the option to prevent the screen from automatically turning off, saving a song or prayer to bookmarks or favorites, and changing the size of the displayed text. The Electronic Songbook is an electronic copy of the book