CodeShip does not officially support any mobile development on either CloudBees CodeShip Basic or CloudBees CodeShip Pro. This includes both iOS and Android.
Some customers have had success manually installing versions of the Android SDK on CloudBees CodeShip Basic, or building the Android SDK in a Docker image on CloudBees CodeShip Pro - but neither is officially documented or supported.
At this time there is no viable workaround for native iOS application builds.