When Any.DO -- the brains behind the popular iOS to-do app -- announced Cal for iOS last month, we had high hopes for its take on calendar functionality. Starting today, Cal will be available for download in the App Store, but we had a chance to play with it early to see what it was all about. The app marks the company's initial foray into a full-blown suite of productivity apps (as teased in their press release below), which will include, at some indeterminate point in the future, Any.DO's own e-mail app. Any.DO is d
