cPanel had launch app to allow user connect to cPanel/Webmail/WHM easier without login into browser anytime and anywhere. 

1. Download cPanel app from App Store.

2. Open the downloaded app.

3. Select + button to add new connection.

4. Fill in the server details accordingly.

Server Information:

For 1. Insert any name user wish to add

For 2. Insert your domain name

For services, May select cPanel/Webmail/WHM accordingly

Authentication:

For 3 & 4.

a. If user selected  WHM as services, do insert the  username and password

ELSE

b. If user selected webmail as services, may insert the email username and password

Note: TouchID may depends on user requirement whereas if user wish to login with fingerprint, may enable it.

Else, user will require to insert password each time during login.

5. A sample  , WHM and webmail is available under the list.