Here are a few recent Mandelbrot/Julia Set renders – created with Frax Pro.

Feel free to download and use as your wallpaper for your iPhone etc.

These are all in 9:16 format to fit your phone screens, you could of course rotate these to fit your desktop devices!

Full size here
Full size here

Salamander

Full view here

Full size render here
A Fractal Frond – full view here