An app in MIT App Inventor that renders in 3D.
The server runs in Node.JS on a computer to do calculations and sends the resulting image to the phone to render.
If you want to see it faster, try the tester/ project for a version written in Java AWT, or the GoodVersion/ project for a version of the Android App written in Android Studio.
If you wish to see the app in MIT App Inventor, you can zip the contents of the AI3DApp.aia/ directory and change the file extension from .zip to .aia, then import it into App Inventor at http://ai2.appinventor.mit.edu