That I have seen there are only 2 for wait times. They are Ride Hopper and WDW Lines. WDW Lines is done by the same people who write the unofficial Guide and to be able to use it you have to have a subscription to their site. It looks pretty good and several people on these boards have said some good things about it. I already had a subscription to the UG site and have downloaded the app for my phone and will be trying it out in a couple of weeks.