Can I use facetime in my own iOS app to measure call duration between two users?

Question

I want to implement a functionality where users of my app can call each other on iOS. A convenient way would be using the built-in facetime. Is there a way how I can take the time the call lasted?

For example:

1. Alice calls Bob.
2. Bob takes call and timer starts
3. As soon as the call is ended, the timer stops.

Can this be implemented using facetime?

Answer 1

As far as I know, you can only initiate facetime calls (using the facetime:// URL scheme). There is no way to know if the call went through, and if it did, how long it took.

In short: No.