TripIt

The app comes with tools for organizing your trips or importing travel plans from your Gmail, Google Apps, Outlook.com or Yahoo! accounts. You can also check out maps and driving directions to your destination, provide a description of your trip and manage all upcoming plans inside the app. It also lets you sync information across multiple devices, including smartphones, tablets, computers and more.
 
You can share plans or even the travel itinerary with friends and see if anyone would be interested in joining. It also lets you add information about the flight, accommodation, means of transportation, meetings that you might have scheduled and other activities during your trip. You can also add details about restaurant reservations and check the map to see locations of various venues.