The best HP41CX available. – i41CX+ Review

The i41CX+ is a FANTASTIC HP41CX emulator, complete with 'plug in' modules and 'keyboard overlays'. I own four original HP41 calculators and a fair number of modules - but even the most reliable of these 30+ year-old electronic devices occasionally 'crashes' and loses data/programs. This app allows the user to avoid the frustration of malfunctions, while still enjoying the versatility of this ( relatively ) powerful, and ( definitely ) historic, computing device. Sure, even the cheapest, weakest, PC available today can do WAY more than a HP41CX can do, and do it much more quickly. But these old calculators required you to really use your brain to plan out programs utilizing limited memory and program steps. Sometimes I have fun trying to think of new ways to solve problems within the calculator's limitations - I also like the notion that I'm using the same device NASA chose as the back-up for the Space Shuttle's computer navigation system. I just wish the App Store had charged me the 'upgrade' price, instead of the full purchase price, since I previously shelled out $7.99 for the basic i41CX app. I'm not sure what went wrong in the purchase process, but I was definitely overcharged. So, five stars for the great calculator app; and, at most two stars for customer service.
Review by OWCA-Va on i41CX+.