Below is a video demonstration of HubSpot’s managed app for Salesforce running on Salesforce for iPad. Salesforce for iPad takes advantage of elements such as stackable screens, which provide much better application for a user’s swiping interaction on an iPad vs. the clicking interaction of a desktop application.
Salesforce for iPad, from Force.com Labs, is available on the AppExchange. It’s a free, but unsupported app. There’s also an open source project for Salesforce for iPad so that the developer community can contribute to the project.