A year ago I downloaded an interval running app for 10 dollars. Recently I recommended it to a family member only to find out they changed the pricing to 10 dollars per month for the same features.
I bet it's all the "social" features running apps cram in now. Last time I looked (admittedly a couple years now) it was slim picking if you wanted an app that didn't sync your data to the cloud or offer some sort of social feature.
I stopped using apps. I run to clear my head and try to stay healthy, not brag that I run.