Sure, your phone's built in calendar does a fine job of keeping track of meetings and chiming in with the occasional alarm, but can it tell you how to actually get to those meetings, or tell your colleagues that you're running late? That's the promise behind the Tempo Smart Calendar, a machine learning iOS planner that leverages the same SRI patents that fathered Siri. Tempo pulls information from the user's contacts, email and apps to present a more complete calendar experience -- associating scheduled events with specific people, or sussing out a meeting's specific location based on limi