][2] In 1987, Gray left a PhD program in theoretical chemistry at the University of California at Berkeley to work with Stephen Wolfram.

[3] His initial work for the company involved creating the influential notebook user interface for Mathematica.

[14] In 2010, Gray founded Touch Press together with Max Whitby, John Cromie and Stephen Wolfram shortly after the announcement of the launch of the iPad.

The first published app was "The Elements,"[17] and in 2014 Gray released "Molecules", which allows users to touch and discover the basic building blocks of the world.

[21] In July 2018, Gray was invited to Beijing on behalf of The Newton Project by its founder, Jizhe Xu, to serve as a consulting advisor.