What is the equivalent of Web Certificates for Mobile Apps? How can I inspect the Trust Certificate of a Mobile App? How to find what URLs the Mobile App connects?
Mobile App Certificates vs Website Certificates
I'm no mobile app dev, but I am pretty sure mobile apps use certificates just like their web counterparts. You may need to do some reverse engineering to see them though.
If you would like to see what the app is connecting to, maybe employing something like Burp Suite would give you some visibility there.
Here's Portswigger's documentation to connect Android and iOS devices to Burp.
I hope that helps you out.