GO-21 SciRPN simulates the venerable HP-21 Pocket Scientific Calculator from 1975. Virtually indistinguishable from the real item in operation, GO-21 is a powerful yet simple retro calculator. Requires iOS 8.0 or later RPN Copy / Paste Shake to clear X Swipe gestures that roll and display the stack Addition, subtraction, multiplication, division Trigonometric functions : sin, cos, tan, sin, cos, tan, degrees or radians Rectangular/polar coordinate conversion Logarithmic functions : log, 10x, ln, ex Other functions : Yx,1/x, x, Display : LED, 10 significant digits (8 + 2 digit exponent in scientific notation), 10-99 to 10+99 Memory : 4 register stack, stack roll down, X-Y interchange, manual memory with register math floating stack and memory window

GO-21 SciRPN alternatives

HP 15C Calculator

Bring your nostalgic fondness for the HP 15c Scientific Calculator to your latest iOS devices with the authentic HP 15c calculator app from Hewlett Packard. This RPN calculator offers the features, algorithms and calculation sequences of the original 15c Scientific Calculator conveniently stored on your iPhone, iPad or iPod Touch. FEATURES: Authentic app, developed by HP Award-winning HP Support Identical algorithms and calculation sequences as the original HP 15c Calculator RPN data entry Matrix calculations Complex functions real and imaginary SOLVE key find the root of an equations Numerical integration Ideal for math and engineering students and professionals Programmable up to 448 lines

  • size 25.9 MB

RPN-67 SD

A dream calculator of the 70s, priced at $1,900 in todays dollars, now on your iPhone RPN-67 SD is the iPhone version of RPN-67 Pro, the first complete simulation of Hewlett-Packards legendary HP-67 programmable calculator for the iPad. Produced from 1976 to 1982, the HP-67 was a huge success among scientists, engineers and other professionals. For more information and free program downloads visit the RPN-67 website: cuveesoft.ch/rpn67

  • size 63.0 MB

RLM-11CX

The RLM-11CX is a full simulation of the successful HP-11C Scientific RPN calculator, with all the functions of the real one in a beautiful high definition interface. It includes a dynamic Portrait and Landscape orientation layouts that can be lock in the calculators preference ([g] > [PREF] key sequence). Disclaimer: THIS IS NOT A HEWLETT PACKARD CALCULATOR, AND IS NOT SPONSORED IN ANYWAY BY HEWLETT PACKARD OR ANY OF ITS SUBSIDIARIES.

  • rating 5.0
  • size 25.0 MB

42s RPN Calculator

42s is an iPhone port of Thomas Okkens excellent and stable Free42, a complete re-implementation of the highly praised HP-42S RPN calculator. There are no ROMs or emulators involved allowing 42s to run natively and fast. * Added display option to show flags 0-4 at the top of the display if they are set.

  • rating 4.125
  • size 1.9 MB

Emu50g

Emu50G is an emulator for the famous HP50g scientific calculator with its original skin. Carry your favorite calculator along with you every day and use it together with your favorite library Features: Full emulation of the HP50g calculator. Tap the LCD to get more information.

  • rating 3.625
  • size 46.1 MB