Outstanding app

As an engineer who still uses a HP41CX and its peripherals in his daily work, and also as an experienced FOCAL (forty one calculator language) programmer, this iPad application is outstanding. If six stars were allowed, this app would get it. Its that good.

After seeing how well the calculator app worked, I did the in-app upgrade to get the printer and additional features. Thats when the app went to six stars. If you believe, like me, that the HP41CX was the best engineering/scientific programmable calculator ever made, and that it was a tragedy that HP quit manufacturing that product, you will love this app. No more need to buy HP41 items on eBay to keep your years worth of custom HP41CX programs alive; just use your iPad running this perfect emulation of the HP41CX.

dane1234 about i41CX, v4.8.4