MacKiev, the publisher of Kid Pix, identifies the current version of the product, Kid Pix 3D, as a product for ages 4 and up, as of 2015. There is no upper limit on the age range because teenagers and adults of all ages may be interested in using the product.
A review on the Parents' Choice website suggests that the very youngest users may need some hand-holding before they can get started. It also says that the software contains a wide range of creative tools so that older chlldren have a lot to explore before they come anywhere near exhausting the capabilities of the product.
Kid Pix 3D incorporates both 2D and 3D capabilities.