Procreate

Procreate is an app that you can download on your iPad/tablet. It is available on the App Store. However, it costs $9.99 (U.S.) to download.

Brushes
Procreate provides us many brushes, so we are not going to list all of them here. Procreate provides us brushes for sketching, lineart, painting and special effects. There is also a function to create custom brushes and sets, and to edit existing brushes.

Fill Tool
In Procreate, the fill tool is called 'colordrop'. To use colordrop, you must drag the color icon towards the place you want to fill in.

Redo and Undo
To undo, you must tap two fingers on the tablet. To redo, tap three fingers.

Crop the Canvas
To crop the canvas, click the magic wand button on the top left area. Click the button that says 'canvas', and then you can crop away.