Love it!

The app works just like my HP12c, only its much brighter, the keys work much better than the buttons on my ancient physical calculator, the values on the display screen are easier to read than the scuffed up screen on my physical calculator, I now have several options to grab (iPads and iPhone with the app), and my iPhone is always close at hand when I need to use the calculator. I much prefer the app over the simple calculator that comes standard on the phone.

MikeSisk about Vicinno Financial Calculator