TechBit: Tempo is a smarter, improving calendar app for iPhone

The Tempo calendar app attempts to improve on the default calendar program for the iPhone -- and largely succeeds -- by pulling information from multiple accounts, adding relevant information such as meeting locations from e-mail accounts and letting users text or call contacts from within the app. Having all of that information centralized in one location is incredibly useful, and the app is designed to pull in e-mail attachments from your accounts to make items like meeting agendas or presenta...