TouchDraw - Trading Your Laptop for a Tablet
Microsoft Visio is the standard bearer for business drawing applications on Windows. When it comes to Visio like functionality for the iPad try TouchDraw from ElevenWorks. The app lets you build vector drawings like flowcharts and custom images built from basic shapes. TouchDraw includes basic flowcharting, architecture, icon, ballons and callouts, and other shape libraries to get you started. Available from Elevenworks LLC for $8.99.