Mack Trucks has released an iPad and iPhone app for its Bulldog Magazine. Available through the Apple iTunes Store, the app can be downloaded free of charge.

The app provides access to both current and past issues of Bulldog Magazine, a 45,000-circulation quarterly publication published by Mack and enjoyed by customers, employees, retirees, dealers, collectors and fans.

Published since February 1920, Bulldog Magazine is among the oldest corporate publications in the U.S., Mack said.

“Our audience is becoming more and more mobile, and the app gives them the opportunity to read and access Bulldog Magazine on the go,” said John Walsh, Mack vice president, marketing.