This app. Okay, so lets start with the accuracy of the buss distance from you. If you are okay with it being at least 10-20 mins wrong.
The app barely knows the location of the bus stop, so good luck not getting lost.
Finally, sometimes "modified service" will warn you about a stop not being in service. But it will be working, and instead you walk a few blocks for nothing.
Curt Cobb about Moovit: Live Transit App - Bus, Train & Subway, v5.2.5