I tried several CC processing apps, and landed on this one as being the best choice for a number of reasons. The interface is simple, clean and functional - much better than some of the alternatives I tried. Also, the hardware card reader was an important feature we absolutely needed. There are several flavors of these iPhone CC readers coming available now, but this solution gave us the best built-in functionality with a good app, and a convenient reader.
Many hardware readers are only designed to work with an iPhone, but were using the app in our tradeshow booth with an iPod Touch. By default the reader fits onto the iPod touch, but very loosely. They recently finished a hardware adaptor for this, which they have offered to ship directly to us at no charge.
Each time Ive contacted the company with some questions, Ive received a prompt reply from friendly folks. This seems like an especially distinguishing quality of this company, and is something you should definitely consider.
I love that you can void transactions easily directly in the app. Great for testing your own card! :) The email receipts are also very nice looking, without a bunch of cheesy branding about their app. Other apps add that to their email receipts, which devalues my own companys brand. iMerchant seems to have things figured out on many levels!
For those of you with Authorize.net accounts, I verified the app works just fine when keying in cards. Take note that if you want to use the hardware swiper, youll need the transaction to run through the NMI Gateway. So the swiper wont automatically configure with your pre-existing Authorize.net account. For us, this actually works out better though since well be using a new merchant account that Troy setup for us on a seasonal basis, which will get better "card present" rates than our current Authorize.net gateway used for our webstore. Initially I didnt want to deal with another merchant account, but they made the process simple, and well be saving money on our live transactions now - plus doing them a WHOLE lot faster thanks to the swiper and this app!