DejaOffice solves a perceived problem for millions of iOS users -- the organization of business and contact information on the iPhone. For those that don't have this problem, the app will feel redundant in many ways. For those that do, however, DejaOffice is a marvel, syncing with Apple or PC resources, streaming everything into a single interface, and allowing you to quickly update all of it on the fly, and then back up to a central cloud server.
Like many business apps, DejaOffice doesn't spend a lot of time training you in how to use it. It starts, provides a brief tutorial, and then presents the dashboard, where you will find contacts, your calendar, notes, tasks, journals, expense reporting, and more. While a standalone app would have been an unnecessarily burdensome extra step, DejaOffice offers syncing with PC (through CompanionLink) and Apple resources to make updating your tools easy. Sync time is a little slow, but it works well and the interface for navigating all of this information is attractive and easy to use.
If you want an app that combines all of your business information into a single interface without requiring you to create new entries or migrate information from your existing accounts, then DejaOffice is a good place to start. With a streamlined, mobile friendly interface, great syncing tools, and a combination of features that work well in tandem with one another, this is a great mobile office upgrade option that many business users will be happy to have.