Is there an app for identifying artists' signatures?

Yes, there is an app for identifying artists' signatures. Called Smartify, it is available for both iOS and Android devices. The app can be helpful in determining who created a work based on signatures. However, it does have limits. For the app to properly identify a piece, the artist must be included in its database, and not all artists are. On 1stDibs, explore a wide variety of fine art.