A full version app for iPhone, by Interval International Inc.

Interval International To Go is an app for planning international vacations. Search for available units at hundreds of locations, browse photos and read reviews, create a personalized itinerary, and book directly on the app. 

When you search, you can see all of the properties that offer the service you want, in the location you want, and at the price you want. You can also browse photos and read reviews of each property, and you can add your favorites to your itinerary.

When you book, you can check in online, and pay directly through the app. You can also add a free cancellation and change your plans.