Order Printer Pro: PDF Invoice

This app is a must. The document customization options alone are worth the price. We print to letterhead that already has our color logo on it, so we can print on black and white printers. This saves on color toner costs, and black and white printers are less expensive. We simply duplicated each document so that each has one with the logo on it, and one with a blank space where the logo would be printed, to print on letterhead.

As long as they don't break it with an update like they recently did, it's a 5 star app.