With the free Hearonymus app the smartphone turns into a modern audio guide for museums, exhibitions and attractions. With the possibility to search for location, category or topic the right audio guide for every occasion can be found quickly. The "Neighbourhood search" points to new, perhaps previously unknown, attractions. The downloaded guides are stored on the smartphone. Thus, the audio experience is guaranteed even in museums or at places with no Internet connection. The Hearonymus app is the central platform for audio guides to download, manage and listen. Very easy to use. There are also free guides. Listen to samples is possible for every guide.