From live tracking game results, tracking your progress or getting a bit more motivation to push through a workout.
There is an app for everything.
A friend recentently recommend me "Runtastic" as they apparently have stories you can listen to while running. In the story you need to run as you getting chased by zombies for example or need to chase someone.
I have not tried that yet but I think it is a great idea.
I have not used actifit so far but I think this would be a great addition to the app.
We have a lot of writers here and we can reward them. Recording and uploading the stories might be a bit more challenging though as maybe voice actors would be needed to assure a higher quality and people can emerge in the story and dont turn it off after the first paragraph.
But before I get to excited about this idea I should try it as I am not sure if this is better than listening to music when jogging.