In an effort to maximize its relevancy in the mobile sphere, Yahoo! introduced a few new iOS apps this week to the App Store. One that particularly caught my eye was TimeTraveler, which allows you to explore the city you're in by creating easy-to-follow trip plans. The app creates the day's itinerary for you based on where you're starting from, where you want to end up, and how much time you have in between. You could also set your start location and destination at the same address to explore the sights around that area.