the author of this app says:
This is a multi-purpose application for scribbling quick reminders, drawing maps or just doodling. Choose from 256 colors and insert one of several background images.
- Palm OS® 3.5 or later
Pogo Sketch and the Inklet app lets you draw using your MacBook Pro's trackpad
Find the perfect background for your Twitter profile
Visalize complex information in color with heat maps
If you're looking for a high-definition atlas application for iPad, then look no further. World Atlas HD from National Geographic has what you need.
If you're looking to spruce up your iPad's visuals, then you might want to try Amazing Wallpaper HD, where you can find hundreds of unique wallpaper images.