Often wrong
Sometimes it really works, but thats not that great if you are relying on it to make your work and life schedule work.
Twice this week I have missed the 66 from 6th and olive NB in the afternoon because it left 3+ min earlier than the app listed. Today I see that the board at the stop lists a time that is 4 min earlier than the app claims. And if things are running behind, the app continually updates the "delayed by" and you end up sitting waiting for a bus that will be there in 6 minutes, and then 10 minutes later, its still 6 minutes behind until youve been there for 30.
SpinnerOShea about
OneBusAway, v2.3.2