The Mandelbulb is a 3D fractal made by generalizing the Mandelbrot set equation, using polar coordinates. Use the sliders to change the shape of the fractal. Use the precision value to specify the size of the smallest details to reolve. The "Fast Controls" option temporarily lowers the resolution when you adjust the view so that it responds smoothly.

With a mouse, click and drag to rotate the view. Hold the Shift key to pa. Hold the Alt key or use the scroll wheel to zoom.
With a touchscreen, move one finger to rotate the view, and two fingers to pan. Pinch to zoom.