The app was designed by two people from the Toronto area and one from the United States in 2009, the Toronto Star reported.
Only one of the Toronto men, 30-year-old accountant Amit Khanna, is willing to go public with his name and discuss why the potty-based app has become a money-maker for him and his partners.
While popular Western culture suggests many people like to read newspapers and magazines while doing their daily ablutions, Khanna said the popularity suggests some would like to share ideas.
"Imagine that you're on the can, and think about the things that you would maybe want to do," he said. "I'm not ashamed of it whatsoever -- it's a conversation starter."
Khanna said bathroom chatterers also have an option to map where other "goers" are located.
The app is sold through iTunes, which takes a 30 percent cut of the proceeds, but Khanna said he has still been able to invest in real estate and one of his silent partners helped finance his way through Harvard Business School with iPoo profits.