Tracking RSS subscriber count
I'm beginning to think about moving away from Feedburner. I'm aware of the various options (FeedBlitz, etc) and don't have a question about them. I do have a question about the built-in feed, though.
If I decide just to serve up the built-in feed instead of using a service like FeedBlitz, can anyone tell me of a reliable way to track RSS subscriber count? I know there are plugins but a lot of them haven't been updated in a while and I don't know if there's a reliable, trustworthy one to use or if Jetpack captures that kind of data.