I purchased an app called Art Authority recently and I highly recommend it for anyone with an interest in art. The app enables you to display over 50,000 paintings and sculptures on your iPad.
The images of the art look great on the iPad and the app is well designed. It divides the art work into eight virtual rooms: Early, Renaissance, Baroque, Romantic, Impressionist, Modern, Contemporary and American.
I think this app is a bargain at a price of $9.99
I gave the app a rating of 5 stars on the iTunes Store.