You can use a Charles installed on your computer, connect your device to the computer and use the computer as a proxy. Then as you interact with the app you will see the calls in Charles.
1. Setting up your ipad’s proxy through the settings app. Instructions here: https://www.charlesproxy.com/documentation/faqs/using-charles-from-an-iphone/
2. Open up any page from your ipads safari browser
3. Click Accept with Charles proxy on laptop asks if you want to proxy device
4. Downloading the charles certificate on your ipad (on ipad, goto: http://charlesproxy.com/getssl ) and accept. OS will warn that it can’t verify, which is okay, accept and then you should be able to monitor calls via Charles.
... View more