Renders LaTeX code in UILabel/UITextfield natively on iOS

You can use KatexMathe View

you can download this library

//MARK:- IBOutlet

@IBOutlet weak var webViewQuestion: KatexMathView!

override func viewDidLoad() {
    super.viewDidLoad()
    self.webViewQuestion.loadLatex("your string")
}

extension ReadQuestionVC : WKNavigationDelegate {

public func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {       
       self.webViewQuestionHC.constant = 10 //Default constant height
       self.setContaintSizeWebView(webView: webViewQuestion, constantSize: self.webViewQuestionHC)

}

func setContaintSizeWebView(webView:WKWebView,constantSize:NSLayoutConstraint){
    webView.evaluateJavaScript("document.readyState", completionHandler: { (complete, error) in
        if complete != nil {
            webView.evaluateJavaScript("Math.max(document.body.scrollHeight, document.body.offsetHeight, document.documentElement.clientHeight, document.documentElement.scrollHeight, document.documentElement.offsetHeight)", completionHandler: { (height, error) in
                constantSize.constant = height as! CGFloat
                webView.sizeToFit()
                self.view.layoutIfNeeded()
            })
        }

    })
}
}