What's the Key Concept of Spring on the iPhone?

Everything is customizable and my recommendation would be go to the settings and play around with it have fun. You can save your layout you can save everything as like themes and then export them and share them with you. A saved search can become a tab a profile can be pinned as a as a custom section or custom view call it whatever you want in spring. All these custom tabs can have a custom name and a custom icon based on asset symbols on the iPhone typically tab bars you know at the bottom of the screen typically you have like four five tabs.