I have purchased more apps than I can count. This week I bought one for my iPhone that I think is going to be my all time favorite. It is available from both Apple and Google Play. It's called Smartify.
If you enjoy going to museums this is going to be a must have app for you. I love hearing the stories behind a painting. While walking around a museum you hold your smartphone or iPad up to an artwork and Smartify will recognize it.
The developers have partnered with museums and galleries to curate a collection of more than 2 million pieces of art. And you don't have to be inside a museum to enjoy learning about pieces. I just watched one of their multi-media tours called The Art of Mindfulness.
And did I mention this app is free?