Prisma lets you transform your photos into artful paintings and drawings.
New or existing photos: Whether you snap photos in app or grab shots from your camera roll, Prisma lets you apply filters to make your photos look like works of art.
35 filters: Prisma offers 35 artistic filters to choose from, in the style of "Van Gogh, Picasso, Levitan, as well as world famous ornaments and patterns." Instagram may offer 40 filters, but none are as striking as Prisma's.
Share anywhere: You can share directly to Facebook or Instagram in Prisma (after you connect those accounts). Tap the Share button to post to additional social networks or to save the image to your phone or iCloud photo library.
Disable watermarks: If you don't want the Prisma watermark to show, disable it in Settings.
Save original and filtered photos: Prisma enables you to save your artwork automatically, and you can also save the original photos you take from the app before you filter them. Configure these options in Settings.
Lag time: Once you select your filter in Prisma, you'll have to wait for 10 seconds for the change to take effect. That may not seem like a long time, but if you're used to Instagram's insta-filtering, it is.
Few editing features: Other than filtering, cropping, and rotating, there is not much that you can do to your photos here. But considering how breathtaking Prisma's filters are, you won't really want or need to.
Prisma for iOS is the most artful photo-filtering app we've encountered.