Favorite Smartphone Soaring Apps

Or.... iPhone vs Android.
I am in need of replacing my blackberry and am trying to decide
between iPhone or Android. Since I have been using an old blackberry,
I know little of the App world and what might be available for use in
Soaring. Thought that if there is a difference in available useful
apps between the two operating systems, then that would help make the
decision.
In what ways are folks using their smart phones for soaring now and
how/where do you foresee using them in the near future?
Any other thoughts that may help differentiate between the two?

Thanks!

WD