The free Leaning TowerUp app was developed by the Opera della Primaziale Pisana, the non-profit organization that manages the site.
A new version of the app has been adapted for use “by the expert hands of the visually impaired...but also by the possibly less expert hands of carers”, the organization said on iTunes.
While the site is famed for the leaning tower, the app also includes multimedia content on the cathedral, baptistery and cemetery.
The app is currently only available in Italian, although an English-language version is in the works.
The square which houses the monuments was granted UNESCO World Heritage status in 1987.
The global cultural organization has praised the tower and its surroundings as “masterpieces of medieval architecture".