What's a dashboard app? It's designed for business users so they can display different bits of institutional information on a single screen. Think of it like the dashboard of your car, or an informational flat screen at an airport.
Numerics (US$19.99) lets you mix and match data from a variety of sources, like Basecamp, Facebook, Google Analytics, Salesforce, stock info (from Yahoo), Zendesk and more, with additional data sources coming. Think of Numerics as sort of a toolkit to let you design your custom display. The app comes with hundreds of pre-designed widgets based on 20 sources of business data.
Data can be displayed as numbers or turned into attractive charts and graphs. Colors and other attributes are under user control. Numeric allows users to design multiple dashboards and then swipe between them, and the app features zooming on an individual widget as well as the setting of notifications and background updates.
I tried creating some screens around stock prices and web statistics from Google, and it was easy to do. There is a complete help system built in.