Procreate is a digital art and illustration application for the iPad and iPhone developed by Savage Interactive. It's a powerful and versatile tool that allows you to create digital art, illustrations, comics, animations, and more.

Procreate features a wide range of brushes and tools that can emulate traditional art materials such as paint, charcoal, and pencils. It also includes advanced features such as layer masks, adjustment layers, and a powerful color picker. Procreate also has a unique feature called "dynamic brushes" which allow the user to adjust the shape and texture of the brush while they are working.

Procreate also includes advanced features such as a built-in animation assistant, allowing you to create simple animations and time-lapse videos of your artwork. It also has a powerful text engine and a variety of text styles that can be adjusted to fit any type of design.

Procreate is a popular choice among professional digital artists and illustrators because of its powerful features, intuitive interface, and the ability to import and export to other common file formats such as PSD, JPG, PNG, and PDF.

It is a paid app and can be downloaded from the App Store.