In 1995, Hartle founded Hour Media, which publishes Hour Detroit - a Detroit lifestyle magazine and website, with business partners John Balardo and Stefan Wanczyk.
Hartle Media launched 7x7, a bimonthly San Francisco lifestyle magazine and website, in 2001.
Bandwdth Publishing creates educational products for app-enabled devices.
Titles include: Bygone Days, an American history app for the iPad,[5] the Bandwdth Artist Dashboard for the Samsung Smart TV, KoЯn and Uproar Tour apps for the iPhone, a KoЯn SMS program, and a Patti Smith: Dream of Life app for the iPad, a virtual art gallery complement to the documentary of the same name.
Hartle is an alumnus of Boston University and Seaholm High School in Birmingham, Michigan.