Imagine that you're out and about and want to print a photo. With iPrintApp ($1.99), you can stop by any local copy or print store with a Wi-Fi network and print the photo on the spot. What makes iPrintApp unique is the elimination of a client/server application on the network to interface between the iPhone and the printer. Nor is there any need for cables or USB or Bluetooth drivers. In other words, this is a simple, easy-to-use app. Photos in your iPhone or iPod Touch photo gallery are printed directly to any networked printer supporting PostScript or USB printers that use Mac SharedQueues, located within their current WiFi network. iPrintApp leverages Apple’s Bonjour technology to automatically detect any compatible printers within the WiFi network.

IPrintApp
Jim,
I've been using iPrintApp for awhile now and it is hands down the best wifi printer app I've found. I took a screen shot of my iPhone and printed it scaled for Letter (81/2 x 11 paper) and it was centered, and the print quality (of course my HP 2600n had something to do with it too) was excellent. I've also stopped loading photos onto my MacBook as a matter of course, and tend to print directly off my iPhone.
Glad to hear you like it
Hi, John. Great to hear that this app suits your needs so well. Feel free to post about it on our blog (even though I posted about it in the past) and relate your experiences.