Opera: Aida, developed by Appcube Ltd Mobile, is an iPhone application that provides the libretto of AIDA by Giuseppe Verdi, along with some information about the opera's origin, a plot summary, and the list of characters. The app is available in Italian, English, or a bilingual version, allowing text comparison. However, the audio of the operas is not included.

One of the app's main features is its legibility. The light text on a dark background is easy on the eyes and makes it possible to read in dark places, such as a theater. The scrolling is also smooth and fluid, and the scroll speed can be personalized and adapted in real-time to match the progress of the opera. Overall, Opera: Aida is a must-have app for opera enthusiasts who want to read the libretto while listening to the music.