Are you stuck on the loading screen? It looks like this:

 

 

  1. Close the app from the recent apps list (double tap home button, swipe the app away), and reopen it.
  2. Delete the app from the home screen and then add it back 
  3. Wipe out your cached safari info on your phone.
    • Settings -> safari -> scroll down to "advanced" -> Website Data -> edit -> getpulse.co -> delete