The HP-41 CV for your iPhone!
The HP-41 CV was the best and handiest Pocket Calculator in the 90íst. (Part of the Apollo missions!) A UPN calculation with the same genial handling is now available for your iPhone. For all users, not familiar with the UPN Concept, a Basic course with examples is included.
The most functions of the HP 41 CV are available free. In addition statistic functions, programmability, persistent Key assignment and new functions like robust static and printing will be available as option.