In search of new user immersive experiences to engage an audience more and more, I built a concept of an UI & 3D object crafted in Spline, where the idea is to leverage "raw gyroscope events" available on Apple iOS SDK, to read the tilt position of the device and, based on it, moving the selected item (in this case 3D object). Using the Spline export to a web format (WebGL/JavaScript) and embedding it in a native iOS app using WKWebView can help with this. Then, the native Swift (or Objective-C) code will read the data from the gyro and pass it to the JavaScript code controlling the Spline scene in WKWebView.