Superb In Every Way!

I missed having an HP 12C emulator on the iPhone (had one on my Palm). Some how I missed this calculator when looking in the App Store and instead purchased one of the other 12 C emulators. It was ok, but the keys were small, it was slow loading and there was a delay in pressing the key and seeing the response. Then while browsing the App Store one day I found AllRPNCalc for a much cheaper price. It is the best calculator app for the iPhone in my opinion - the keys are large and clear, the display is wonderful. I love the red and green coding used in the display. The key click sound is not annoying as it is on some of the other calculators. Unlike other iPhone calculators this one is fast and accurate. Plus, besides getting a financial calculator that is true to my old 12C, it includes features from other HP RPN calculators from the past. Buy this calculator, you will be very happy. It is reasonably priced, takes up very little memory and the developer has proven to be very fast at fixing bugs.

Jon Doh about allRPNCalc Calculator