For any of our readers planning to take a trip you'll want to check out the list below to see if your destination city is there. For this week only, mTrip is offering its popular iPhone travel guides for free. Different guides are available for free each day of the week. All of mTrip's travel guide apps are usually $5.99, so be sure to grab them for free while you can! The giveaway is in celebration of mTrip's new social sharing features, which allows users to share photos, reviews, and more with their friends through mtrip.