Terrible
As other have said, this app is a complete work of fantasy. It lists wait times for attractions which are closed for renovations (Star Tours). While in the park I compared wait times and they were way off. The app said single digit minutes for wait times, but the lines were 20 - 90 minutes. DO NOT WASTE YOUR TIME OR MONEY on this app!
Mouse Fan about
WDW Magic - Disney Wait Times and Maps Edition, v2.1