In order to open an app or a website (if the app is not available)

UIApplication+tryURL.swift

extension UIApplication {
    class func tryURL(urls: [String]) {
        let application = UIApplication.shared
        for url in urls {
            guard let url = URL(string: url) else {
                continue
            }
            if application.canOpenURL(url) {
                application.open(url, options: [:], completionHandler: nil)
                return
            }
        }
    }
}