El Passion has Daypack for Basecamp (iTunes Link) for the iPhone and iPod Touch in the iTunes App Store for FREE (regularly $9.99) for a limited time.

Daypack is the most beautiful, functional and simple in use Basecamp iPhone app.

Access multiple accounts and browse through any content (Discussions, Text documents, To-dos, Files) in the simplest way possible.

Daypack provides access to Basecamp actions you need and use the most. There is no cluttered interface with features you would hardly ever use.

You will need a Basecamp New or Basecamp Personal account in order to use Daypack. Basecamp Classic accounts are not supported.