Is there any way to control settings inside iphone app rather than settings outside the app?

Question

Is there any way to control settings inside iphone app rather than settings outside the app?

and

I could not find what kind of item I will add to plist in settings.bundle in order to change font type for example; Times New Roman to Calibri

I searched other references that people gave me 1 day ago but I could not find a point that makes this subject clear.

Answer 1

yes, but you have to build your own UI if you want to let the users edit them.