This past weekend, I got through four fun-filled days at Disney World and emerged relatively unscathed from the perils of long lines and the whining that ensues on them. In part I have to thank the temperate weather, but I owe a huge debt of gratitude to the free Undercover Tourist Disney World app which I couldn’t have lived without.

The Undercover Tourist app for Disney World is seriously a godsend. While it has a lot of helpful features, the most useful are the up-to-the-minute, accurate wait times for every ride and attraction. If you’re in Fantasyland, it can save you a lot of time and hassle schlepping over to Tomorrowland just to discover that the Buzz Lightyear ride has a 90 minute wait, or that the Speedway just shut down for repairs.

It was also great for finding the best restaurants nearby (you can view in list mode, or using the GPS in map mode) when we were starving and didn’t want to wander all over Animal Kingdom searching for something besides the pizza joint in front of us. Plus it’s got parade times, attraction and food ratings, and even a daily crowd forecast to help you plan which parks to hit on which days.

I easily used this app 20 times a day–pretty awesome for a free app.

Find the Undercover Tourist apps for both Disney World and Universal Orlando available for iOS, Android, Blackberry, Windows Phone, and even Facebook.