Good Gear Guide
In Pictures: 25 essential business apps for iPhone...
Do.com is billed as a “social productivity” app. Do.com helps you organize projects, track contacts and close deals. The app has a “Sales Progress” feature to help you track and meet your sales goals, and a “Virtual Checklist” that allows you to assign tasks to others by groups or projects. A built-in collaboration feature enables secure sharing of critical information.
Available on Android too? Yes
In Pictures: 25 essential business apps for iPhone 5