Ah, no I meant a mobile app. Sorry for the confusion.
Well… HPKP is a kind of kind pinning - I just wanted to show the difference between the app key pinning* and HPKP.
Here are more information:
And yes, you’re right he mentioned that the users use a browser. In this case that’s of course not possible.
My reply should just be a note about the general problem for others. (not especially for him) That’s why I said ‘If it’s your own app’ but it seems this was misinterpreted (because of the ‘native app’ part in the first post, which mean another kind of app). So I meant an mobile app you develop yourself.
* this is not an official name