Reporting a bug?
Include your OS version, the app's version, and the steps that trigger the problem. Screenshots help a lot.
Before you write
The help center has full walkthroughs for each app, and every app page has an FAQ — most questions are answered there.
Refunds
Purchases are handled by Apple. Request a refund at reportaproblem.apple.com — we can't process refunds directly.
Privacy questions
Each app has its own policy — the overview lives at /privacy.