Listen to Wikipedia is an educational and reference application available for iPhone. This unique app allows users to see and hear every change made to every article on Wikipedia in real-time. With each addition, bells are sounded, and with each subtraction, strings are plucked. The pitch of the musical notes changes depending on the size of the edit, with deeper notes for larger edits.

In addition to the auditory experience, Listen to Wikipedia provides visual cues as well. Green circles represent edits made by unregistered contributors, while purple circles indicate edits made by automated bots. The app also features orchestral swells and a blue banner to welcome new editors.

One of the standout features of Listen to Wikipedia is its multilingual support. The app currently supports English, German, Spanish, Swedish, Russian, and 27 other languages, making it accessible to a wide range of users.

Overall, Listen to Wikipedia provides a unique and engaging way to experience the constant updates and contributions to the vast knowledge base of Wikipedia. Whether you're a student, researcher, or simply curious about the world, this app offers an immersive and educational experience.