Annoy your friends! Enrage your enemies! Bore yourself to tears! 99 Bottles is a free iPhone application developed by Matt Neuburg that does just one utterly pointless thing: it sings the entire song "99 Bottles of Beer on the Wall" in an artificial-sounding computer-generated voice.

The app displays 99 bottles on the screen, and as the song progresses, the phrase "take one down" prompts you to tap a bottle to remove it from the screen. The count of remaining bottles is also shown, allowing you to watch the screen as well as listen to the song.

If 99 bottles is too many for your liking, the app allows you to start with fewer bottles, ranging from various amounts down to 1.

Please note that singing along is not recommended for your own safety, so remember to sing responsibly.