Integrating with Swift projects which use 'use_frameworks!' in the Podfile
ios - Why do we use use_frameworks in CocoaPods? - Stack Overflow
CocoaPods 1.5.0 — Swift Static Libraries - CocoaPods Blog
Cocoa Touch Frameworks
They are always open-source and will be built just like your app. (So Xcode will sometimes compile it, when you run your app and always after you cleaned the project.) Frameworks only support iOS 8 and newer, but you can use Swift and Objective-C in the framework.
Cocoa Touch Static Libraries
As the name says, they are static. So they are already compiled, when you import them to your project. You can share them with others without showing them your code. Note that Static Libraries currently don’t support Swift. You will have to use Objective-C within the library. The app itself can still be written in Swift.
Integrating with Swift projects which use 'use_frameworks!' in the Podfile
ios - Why do we use use_frameworks in CocoaPods? - Stack Overflow
CocoaPods 1.5.0 — Swift Static Libraries - CocoaPods Blog