What is the difference between Firebase/Auth and FirebaseUI/Auth? - ios

Question

For Firebase iOS, if I want to do user authentication, is there any difference between these 3 choices?
FirebaseUI
FirebaseUI/Auth
Firebase/Auth
And it would be great if someone can explain the pros and cons of using the "pre-built" FirebaseUI and the Firebase authentication SDK?

Answer 1

The Firebase/Auth pod is the core SDK for Firebase Authentication. You can't do authentication without it. It provides no UI.
FirebaseUI is UI components built on top of Firebase Authentication that handles login flows that make your app easier to write. You can't use it without Firebase/Auth.

Answer 2

If you see One thing in Docs Listed At - https://firebase.google.com/docs/auth/
It provide full sign in flow to your app , All pods frameworks needed to sign in through app is provided by that
--> A short Difference let me try to Explain with pod File
-> If used pod 'FirebaseUI'
Refer to Docs Page at - https://firebase.google.com/docs/auth/ios/firebaseui
And you will see
pod 'FirebaseUI/Auth'
pod 'FirebaseUI/Google'
pod 'FirebaseUI/Facebook'
pod 'FirebaseUI/Twitter'
pod 'FirebaseUI/Phone'
For login procedures like Facebook and google is being provided with pods using firebaseUi only
Whereas in pod 'Firebase/Auth'
if you look to if we need to connect Facebook or gmail we explicitly use default Pods being provided with Social services as
and for Facebook
Second Again referring to main Doc - https://firebase.google.com/docs/auth/
Under Firebase SDK Authentication you can see what various integration we can use
i.e You can sign in users to your Firebase app either by using FirebaseUI as a complete drop-in auth solution or by using the Firebase Authentication SDK to manually integrate one or several sign-in methods into your app