The app was launched last month by Hachette Book Group USA to help promote the release of "The Man's Book: The Essential Guide for the Modern Man" by Thomas Fink. The lifestyle guide includes advice on choosing the proper urinal, among other vital tips for guys.
Lily Gold, founder of New York-based technology firm Intuwin, which developed the "Urinal Test" app, said it has been getting well over 100,000 installs a day lately. What about the book? It
ranked 2,690 in sales on Amazon as of Monday. Then again, it's not free. --Mark Walsh