Prisma is now a days more popular because of their strategy. Nothing new in this app, as there are a lots of similar kind of app. It is a app which can convert an simple photo into a art. But the problem lies in this photo to art conversion. It takes more than 5 mins to apply one filter and uses internet. So if you wait for 5 mins for one filter to apply and after in case you do not like that filter than you have to wait for another 5 mins( approx. depend on traffic over internet) . And you cant use this app ofline.