Two different iPhone apps for HDR
This app (iCamera HDR) on the auto mode had more control over the highlights. Two photos were taken, combined and then you get a series of sliders to adjust. This app has been updated with new software.
This photo was from (HDR Pro) app. It works very well. I did not have the same control over the bright lights. Both photos were taken in a coffee shop. Again, I used the auto mode. The app shot two photos and then combined them into one image. No post editing was done out side the cell phone.