What are some alternatives?
When comparing AltaMail and Printer Pro, you can also consider the following products
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
Air Sharing - Air Sharing lets you bring your documents with you — without bringing your computer.
ePrint - If you have the right printer, “ePrint” will let you print directly from your iPhone or iPod touch.
Print n Share - “Print n Share” for the iPad, iPhone & iPod Touch is the best printing and file sharing app.
QZ Tray - Print raw (ZPL, ESC/P, FGL), HTML, PDF as well as communicate with USB, HID, and serial devices...
Pogoplug - Pogoplug is cloud storage which provides unlimited storage.