I don't use
any mp3 player or phone while running. Real athletes focus on the burn, not needing the distraction or crutch of music to get through a run

. LOL
What you imply about our 'inability' to focus on the burn, sans inspirational music, I have to infer the same about your 'inability' to focus with a little auditory distraction. Fact of the matter is, you seem unable to function in more than one capacity at a time.
As i said before, I forgoe listening to music in preference for a good book (not to take anything away from the music lovers - whatever floats your boat). It's a bit like watching a movie in my head and helps to pass the time. You might say I need something to occupy the remaining portion of my massive brain; that or I just suffer from a mild case of ADD during my runs, wishing to have something other than ever expanding road beneath my feet to occupy my interests.
And you refer to professional athletes only listening to their headphones outside of actual performances. Am I to assume you compete 'Professionally' on a daily basis, and therefore must not allow yourself the enjoyment of such entertainment at 'any' time? If that is indeed the case, I tip my hat to you. If not, I must redirect your attention to all those professional athletes and their preferred accessories while 'training'.
I guess the moral of the story is this: I'll do what works for me and you do what works for you, and we'll all live happily ever after. ;-)
On to the OP:
I currently use SportyPal to map and catalog my runs. However, I've seen a lot of recent talk about CardioTrainer. But, when i look online, the GPS functionality has left a little to be desired in the reviews. Also, the fact that I have a few weeks worth of run data already listed on my SportyPal profile leaves me hesitant to try something different. Additionally, I read something that led me to believe that CardioTrainer sends you to google maps to see your actual run map (I like that SportyPal's maps are right within the native application - even if it is pulled in from an outside source).
Could someone please explain why I might like CardioTrainer more?
Thanks.