Dale Carnegie, the App Secrets of Success app breaks down the core Carnegie leadership principles

The granddaddy of management gurus--If you want to gather honey, don't kick over the beehive--is now an app.

Seventy-four years after the publication of Dale Carnegie's How to Win Friends and Influence People and 55 years after his death, his advice is being downloaded by the thousands, $2.99 for BlackBerry and 99 cents for iPhone (a bargain compared with the average Carnegie workshop fee of $1,600).

The app, Secrets of Success , is no Tap Tap Revenge, but it does break down the core Carnegie leadership principles, functioning like a pocket-sized management prof and personal cheerleader. "You can review some sales pointers before a call or get a quick confidence boost to help you close the deal," says Piera Palazzolo, senior vice president of marketing at Dale Carnegie Training. "And there's a library of short videos that show the right ways to talk to someone."