App Ninjas Debuts Credit Card Swiper For iPhone By Shane McGlaun Nov. 3, 2010 7:43 am EST You might be familiar with the iPhone app from developer App Ninjas called Swipe.

Intuit makes money on the service by collecting a card-swipe fee of 2.7 percent of the purchase price (the fee rises to 3.7 percent if you don’t actually use the swiper but manually key in the ...