This is a sample code to integrate Unity into iOS Swift app The sample based on the uaal example provided by unity Please refer to the sample below

https://github.com/Unity-Technologies/uaal-example

• $ Pod install
• Open xcworkspace
• Open the Unity project file and make an iOS Xcode Project and then copy to iOS Library folder
• Follow the guide in the unity uaal example, You need to create a reference of the unity framework and create various project configurations Please refer to the document below
• https://github.com/Unity-Technologies/uaal-example/blob/master/docs/ios.md