Ive had this app for several years and have recommended it to many new runners. Recently I downloaded it again to start running after an injury but was disappointed by the current version. The run/walk alerts no longer work when the iPhone is locked. You have to set the auto lock to never in order for the alerts to come through. This one great app is now just a so-so GPS tracker with music. Save your money and look elsewhere until they fix this problem.
SeveraNessus about Ease into 5K: run walk interval training program, v3.5.8