The AutoCAD® WS web and mobile application for AutoCAD® software lets you view, edit and share DWG™ drawings through a web browser or mobile device. Store AutoCAD drawings and project files in online workspace. Free.
Autodesk® SketchBook® Pro is a professional-grade paint and drawing application offering a complete set of sketching tools and intuitive user interface designed exclusively for the iPad experience. $4.99.
Penultimate offers three pens, digital ink and paper, and a magic eraser tool to create beautiful drawings, calligraphy or annotated photos. Email single page images or entire notebooks in PDF format
or send to your computer with iTunes File Sharing. $0.99.
All the world’s a note with Evernote. Snap a photo, record some audio, make a list, grab a web page and save them. Sync to all your devices to take your notes with you everywhere and share with colleagues or friends. Free.
Moodboard is a customizable bulletin board for organizing things that inspire you?images, photos, color swatches, text and more. Share you board with others. Includes a color palette picker and color loupe. $9.99.
TurboViewer lets you pan, zoom and rotate through more than 20 different 2D and 3D drawing types in DWG and DXF™ files. Free. Available with additional features as TurboViewX for $3.99 and TurboViewerPro for $19.99.
One of a suite of carpentry apps, iHandy Level acts as a level on your smartphone. Free.
Peppermint uses a unique Natural Color System color wheel to help in selecting analogous, complementary and monochromatic colors. Free.
After taking a new image or using a preexisting image, you can draw measurements directly on the image with Photo Measures and save it. Includes zoom and magnifying features to increase accuracy. $4.99