This amazing application is like having a complete artist's palette, right on your mobile phone. With an advanced color picker, several brushes of varying sizes and styles, multiple layers, and extreme zooming, Brushes gives artists the power to create original artwork in seconds. And while it may take a while to create a masterpiece, this app is legit: it was used to create a cover for The New Yorker magazine and boasts an amazing archive of "paintings" created by real artists using just a finger. (Taptrix, Inc, $4.99)