RPN-25 CE for iOS

RPN-25 CE is a photo-realistic simulation of Hewlett-Packard's highly popular scientific calculator HP-25 for the iPhone. Produced from August 1975 through 1978, it was the "Squash" member of the second-generation HP calculators known as the "Woodstock" series.

It was also the first programmable calculator costing less than $200.

RPN-25 CE simulates the HP-25C version released in July 1976. Its major improvement in that update was "Continuous Memory".

While the simulator works just like the original calculator, a number of carefully designed extensions make it much more powerful.

Features:

Photo-realistic look

Programmable (99 steps), subroutines, conditional loops, branching

Insert and delete steps with automatic address correction

20 registers, "non-volatile", with unrestricted store/recall arithmetic

Much faster than the original

"Live" register view supporting user interaction (run/stop, single-stepping)

"Live" stack view

Thousands separator (optional)

Selectable pause length

Program listing view with program title and description

Program library view

Store, name and retrieve any number of programs

Sharing: Files, iCloud Drive, e-mail, AirDrop, Dropbox, copy, paste, print

More than 60 programs pre-installed

More than 70 functions not available on the HP-25

Import and run RPN-32 CE and GO-25 programs

Supports Dark Mode

Calculator functions:

Statistics, including clearing statistics registers only

Factorial for arbitrary arguments

Trigonometric functions (degrees, radians, grads)

Polar/rectangular conversions

Inverse, square root, logarithm, exponential, pi

Percentage

Storage arithmetic (store and recall)

Low-battery warning

Sound alerts

..and many more

Details: cuveesoft.ch/rpn25