"It was created by Mark Townsend by translating Scott Draves' original C code into Delphi and adding a graphical user interface. It has since been improved and updated by Peter Sdobnov, Piotr Borys, and Ronald Hordijk"That was news to me. To clear this up, I emailed Ronald and Mark and indeed they confirmed that Apophysis used Ronald's code for rendering. Ronald said that in 2001 he translated the C into Delphi for a (non-animated) Flame screensaver. I remember the screensaver and Ronald's work because he was the first person to add new variations, but I didn't know that Mark used it. Mark developed and released the first version of Apophysis (by adding a GUI) in 2003 or 2004. Thanks guys!
If I remember correctly, it was Ronald Hordijk who translated Scott Draves' original C code into Delphi, to make "Fractal Flame Screensaver". And only then, Mark Townsend made Apophysis using Ronald's renderer code.