If you're curious about it for your own iOS app, we have that data for you. We keep all app data private to the app developer though, so we can't share aggregate statistics.
Can you explain your policy on using and sharing aggregate statistics? Your privacy policy allows you to collect them but from my quick glance I hadn't realised you didn't share them.
We don't share data to any third parties. We do look at aggregate traffic internally to ensure we can meet demand. We also will go into people's accounts if they ask us to for support. I'll make that more explicit in our policy.