Company Lingolia created these great apps:
Lingolia Sprachführer Englisch, Lingolia Language Guide German, Lingolia Business English, Lingolia German Grammar, Lingolia English Grammar, MoMouse Puzzle, Lingolia French Grammar, Lingolia Daily - German, English, French, Spanish, Italian, Esperanto, Russian, Deutschkurs für Anfänger, Lingolia Spanish Grammar, Lingolia Esperanto, Calculy, and others..
