Ionic support for native apps build in objectiveC and Swift

Hello I am a iOS developer and new to ionic projects so would like to know if I could integrate any ionic projects in my existing application which is already developed in objectiveC and swift.Basically the need is to integrate a video calling feature build in ionic to my existing project so please suggest.

It is possible. Google embedding Cordova into existing app. Basically, you need to add a webview into your native code and load everything up. Seems like overkill to me. Ionic does not have a video calling feature. It is just a UI layer. That feature is a plug-in (aka native code with a Javascript interface).