Grimoire
A book of magick. Why the library of this app bears the name.
A grimoire is a book of magick: a collection of rituals, signs, prayers, recipes and lists of what belongs to what. The word is French and comes from grammaire, "grammar". In the Middle Ages that meant any book of Latin learning, and to people who could not read, a learned book and a book of spells looked much the same.
The famous grimoires of Europe, such as the Key of Solomon or the Petit Albert, were written between the late Middle Ages and the eighteenth century. Most claimed an ancient author, King Solomon or a pope, to seem older and weightier than they were. Printing made them cheap, and by 1800 pedlars sold them at fairs. They are read today as history; much of what they contain is strange, and some of it is harmful.
The library of this app is called the Grimoire because it holds what there is to learn. Your own notes go into your Book of Shadows.
Related: Book of Shadows, ceremonial magick.