Price: $3.99
Download link: iTunes
You can make such a wonderful drawing by means of Colored Pencils app, which perfectly simulates pencils on a sheet of paper. Everyone – young and old – will like this nice program¬.
The app has beautiful intuitive interface, which is very easy to use, this cannot but gladden 
The features are as follows:
– canvas size choice: 320×320, 320×480, 480×480, 480×640, 768×768, 768×1024;
– many colored pencils and erasers;
– layers (copy, merge, rearrange, adjust transparency, add to max 4 layers);
– undo / redo with 20 steps;
– draw area zoom;
– rotatable and reversible canvas;
– send mail with a painting image attachment.
The program is available in AppStore for $3.99.