i've used other app's before where I where able to put a photo from my own galery to the activity. I always put a picture of the shoe I was wearing during the run. It was the easiest way so I dont had to type. But here it is just possible to add pictures which I had taken during the run. I never do that. Would be great if you could change that.
Like your app, GPS is best of all app's I've tested.