I absolutely love the Postman app, well done and thank you! My biggest frustration with native apps are things like the Google login. Without it being in a browser, I have no way to verify that I'm looking at a legitimate login, or a fake one, right through to 2 factor authentication.
Thank you for the comment! I think there are ways to represent this better (just with a URL bar for example). Will look into it.
Now I've been using Postman for many years, so I certainly trust the quality and intent of your work.