Red Sweater Software was founded in 2000 by Daniel Jalkut, who worked as a System Software Engineer at Apple before venturing out on his own in 2002.

(**Mac**) Clarion is a simple tool for practicing the recognition of musical intervals. Geared toward delivering the maximum product in the minimum of space and complexiy, Clarion offers a number of preferences which should allow you to focus in on the exact interval ear training practice you require.