AutoCAD 360
Another Autodesk app offers an easy-to-use mobile platform for drawing and drafting so you can view, edit and share AutoCAD drawings. Use it in conduction with an AutoCAD 360 Pro subscription plan for full access to all of the features.
Sketchbook
This top digital sketching app for designers and architects couldn’t be easier to work with, offering a complete set of sketching and painting tools with custom canvas sizes, full multi-touch support and a gallery for storing works in progress.
Moleskine for iPad
Craving the authenticity of a Moleskine notebook, but unwilling to tote a real one around? The Moleskin app for iPad has all the features you love most in the classic journal, so you can store your favorite snippets of imagery and text and create sketches with digital watercolor brushes, pencils and pens.
iRhino 3D
Visualize and show off your ideas in 3D with this design app, which allows you to view native Rhino 3DM files on your iPad, iPhone and iPod Touch. There’s a Droid version, too.