I would also get the My Disney Experience app so that you have access to your fp+ reservations as well as dining reservations. It also includes wait times. I have both MDE and UT apps
I've used the paid touring plans app for a few years. It worked well at WDW but some of the free apps were as good. However, my experience with that app at US was terrible. Wait times were significantly off and were useless. Disappointed there.