It depends greatly on what you're doing. For Facebook or Twitter, in typical use? Hundreds or thousands, but not hundreds of thousands.<p>For, I don't know, a podcast app, it could be dozens for most users, low hundreds for power-users.<p>There exist very lucrative mobile apps where the answer is likely single digits. (In addition to some which make no requests at all, of course.)
I should have been more clear. I was looking at how many API calls a typical app would make when gathering data. Is it in the hundred, thousands? On average. Or that too wide of a question to get an accurate metric?
There's no clear metric because it's dependent on how many requests each individual API the app has integrated or built.<p>To find out you would probably have to test a lot of apps yourself and extrapolate from that.