What is "syntorial"

Syntorial is a synthesizer- teaching software created by Audible Genius, a company owned by website programmer, musician and teacher Joe Hanley. He was inspired to make the program by his frustration of learning synthesis in his early career, and wanted to create something that would train the user to design a patch by ear. Kickstarter-funded in 2012, the program was officially released for Microsoft Windows and Mac OS X on August 27, 2013, and for the iPad on June 25, 2015. The synth that is built into the software is called Primer, which was released as a VST and AU in November 2013. Syntorial garnered critical acclaim with reviewers praising it a fun way to learn synthesis, earning an Editors’ Choice Award from Electronic Musician in 2014. The latest version of Syntorial is 1.6.1, which was released on August 4, 2015.