Now Available for Android on the Google Marketplace and for iPhone at the iTunes App Store for both the iPhone and iPod Touch: the WDW Transportation Wizard iPhone/Android App.
The OLP Walt Disney World® Transportation 
Wizard iPhone App is now available on Android! TWiz is the app that will help you get where you need to go using Walt Disney World transportation system. TWiz is loaded with helpful tips and suggestions about the WDW Transportation system. Now you can
share your own times and tips with other users.
iPhone version 4 has just been released and includes route tip rating and sharing features -- now you can decide which routes get the thumbs up and which ones get the thumbs down. These ratings will affect which routes are selected by Mr Wizard. We have also added 100 new route times, based on over 30 suggestions from our helpful users.
Reviews of TWiz:
App alert: The OLP WDW Transportation Wizard for Walt Disney World is the best way you are going to invest 8 quarters. After searching for this functionality in a site, which I really thought I had seen, I noticed this app during a buying binge last week.
Even from my couch, I could figure out how to get from Pop Century to The (Real Fantasyland of) Grand Floridian for a pedicure, without scuffing my toes. Especially if you have a child who is committed to taking a particular mode of transportation, this app will give you best case scenario guesses on how long it will take get from point a to point b. Wish I’d had it on my last trips, as does the restaurant manager who smiled as I explained that we took a bus, then a boat to the character meal that was about to close, instead of a plain old bus, which according to “Twiz” would have saved us about 25 minutes. Did I mention it was $1.99? Yes, U.S. $1.99, but still. If you are traveling with a small group, one might suffice. If you are traveling with anyone in my family, make sure everyone has one (especially if you plan to split up for a few hours for naps or swimming) so you don’t have to share, or wait at the turnstile for that last little straggler getting off the boat. Saving time is saving Disney Dollars. Invest.
from meltdowndisney.com
TWiz is an app for those planning on using the Disney transportation service throughout their journey. Twiz allows for you to select and starting point and enter your final destination. TWiz suggest routes for you and your party to take based on the transportation service. It allows for a starting point anywhere on Disney property ie park, hotel, DTD or TTC. An approximate journey time will appear when a route has been given to you and tips about the route too i.e location of boat docks.
Tip for this app: Do play around with this app when you've downloaded it before traveling as sometimes the routes displayed aren't necessarily the quickest.
from The Dibb