Fraser Speirs:

I’ve been interested recently in the apps available for iOS that push the very edges of what we thought was possible on a mobile device. Informed by my recent experience of spending a week on iOS alone, I decided to try and express what I mean by “ambitious” and to collect some examples of those kind of apps.

When iOS first appeared, it was a smartphone OS. Today, with the iPad, it’s much more than that. To be an “ambitious” iOS app, I think you need to be doing one or more of the following things…

What a great list. Be sure to check out his public spreadsheet as well.