Complex RPN Calculator is a scientific RPN calculator with a four stack whose native number is complex. You can view and enter numbers in both polar and rectangular formats. Complex RPN remembers its state between usages and has 10 memory locations.


Similar Apps

Complex RPN Calculator PRO
GO-21 SciRPN
RPN Scientific Calculator
Linear regression RPN calculator
RPN Stack Calculator
Numbers & Calc
RPN Calculator 48
Calculator RPN
Logos | RPN Calculator

Complex RPN Calculator alternatives

NeoCal Lite Calculator

NeoCal Lite is based on an advanced, award-winning calculator designed to work just like a real calculator, only better. The intuitive keyboard design provides efficient access to many scientific and conversion functions without having to access menus or lists of functions. SUMMARY OF BUILT-IN FUNCTIONS- Scientific: trigonometric, hyperbolic, and logarithmic functions- Conversion: length, area, volume, speed, weight, temperature; unit arithmeticSUMMARY OF FEATURES- UI designed specifically for the iPhone, iPad and iPod touch- Multitasking support for use with other apps- User-selectable themes- Multiple keyboard layouts- 12-digit display with thousands separators- Labeled results for clarity- Optional RPN input method- Selectable RPN stack size- Up to four display lines- 20 or 100 user registers- Multi-level Undo/Redo- Extensive user guide

  • size 2.8 MB

Retro 15C

Students and scientists from the 1980s will remember the classic RPN scientific calculators. These calculators strike a perfect balance between functionality and complexity. I love this calculator and I like to share.

  • rating 4.84
  • size 5.6 MB


my41CX is an advanced programmable and expandable RPN Calculator. It is a functionally equivalent to the world famouse HP-41C/CV/CX calculator. Calculator features:- Functionally equivalent to the HP-41C/CV/CX- Programmable- Four module ports provide access to HP-41 expansion pacs- 63319 Memory registers (depending on the model emulation)- 4412233 Program steps (depending on the model emulation)- Support for .MOD files- Beautiful and clean user interfaceNote:- Beep is not supported

  • rating 3.4
  • size 14.0 MB


Free42 is a re-implementation of the HP-42S calculator and the HP-82240 printer. It is a complete rewrite, not using any HP code, and it does not require an HP-42S ROM image. The executables and source code are released under the terms of the GNU General Public License, version 2.All third-party code used in Free42 is either in the public domain, or licensed under terms compatible with GPLv2, or used with the authors permission.

  • size 6.7 MB

Matrix Master 2

Matrix Master 2 is the evolution of Matrix Master. You can do so much more. When a matrix has to be of certain dimension for an operation to be successful, the dimension is simply applied to the input so that you dont have to do it again.

  • rating 3.2
  • size 25.5 MB

More Information About alternatives

Complex RPN Calculator PRO

Complex RPN Calculator is a scientific RPN calculator with a ten stack whose native number is complex. You can view and enter numbers in both polar and rectangular formats. Pro adds portrait orientation over free version.

  • rating 3.71429
  • size 0.5 MB
  • version 1.3


The best RPN complex number calculator on the App Store. RPN iX+ is a simple, yet powerful RPN calculator with an infinite, scrollable and selectable stack and native support for complex numbers. And despite the small <1MB download it is packed with features:Unit Conversion directly from the StackFully customisable constant library (simply add or remove constants to customise to your needs)Infinite memory with quick access buttonsInfinite, scrollable and selectable stack (simply click on an entry to duplicate, or click-and-hold to delete)Tab-based interface with colour-coded functionsSimple-View option with large buttons for easy user inputNative support for complex numbers (both Polar and Cartesian input/output)Multiple undoIntelligent decimal precision handlingEngineering modePower and Trig functions (both real and complex) with both degrees and radians for input/outputPowerful statistic functions performed directly from the stack (sum, count, mean, median, mode, standard deviation)Probability (permutations P(n,k) and combinations C(n,k))And moreFor additional support or to contact the developer please visit:

  • size 1.1 MB
  • version 2.3

GO-21 SciRPN

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

  • size 26.3 MB
  • version 4.9

RPN Scientific Calculator

A scientific RPN calculator inspired by traditional HP calculators but created specifically for the iPhone and iPod touch. It features a standard four level stack with multiple display options, and BCD math for accuracy. Provides ten memory storage locations with arithmetic access functions.

  • size 13.2 MB
  • version 1.3

Linear regression RPN calculator

Linear regression RPN calculator is a scientific RPN calculator with statistical functions. Its a tribute to the legendary HP41.This calculator implements all scientific and arithmetic functions, 4 levels stack, 10 storage registers, and statisctics capabilities. Graphical data representation.

  • size 2.5 MB
  • version 1.0.1

RPN Stack Calculator

Simple, Clean and Easy RPN Calculator for iOS.+ Reverse Polish Notation.+ 9 visible stack rows.+ Interactive stack.+ Easy access to scientific operation.+ Optional comma-separated numbers.+ Undo/Redo functions.+ Useful shortcuts.+ Custom settings. Interactive Stack:- Drag numbers throughout the stack to relocate them.- Tap on stack to Copy / Paste / Delete rows.- Swap button.- Rotate buttons. Arithmetic - Trigonometry - Logarithms - Etc

  • size 2.4 MB
  • version 1.3

Numbers & Calc

Crunch numbers with My RPN Calc, the most complete scientific and financial RPN calculator, convert numbers between various computer representations, including IPv4, with BaseCalc, and discover the numbers from the past with Numeral, from hieroglyphs to Maya, Sumerians, and Babylonians.

  • size 10.7 MB

RPN Calculator 48

RPN Calculator 48 is a polished RPN replacement for Apples built-in calculator:- Starts quickly- Large buttons- Easy-to-read display- Same scientific functionality as Apples calculator- 100 entry stack (4 to 7 visible)- 6 memory buttons (A-F)- 50+ levels of undo/redo- Saves state on exit Use swipe gestures to undo/redo operations The ergonomics (screen and keyboard layout) of RPN Calc. 48 were inspired by HPs outstanding 48-series calculator. 48 is made by the developer of tChess (the critically acclaimed iPhone chess game) and Learn Chess (the Apple Staff Favorite e-book).

  • size 0.7 MB
  • version 1.0.5

Calculator RPN

On this calculator you will be able to benefit from all the functions of a scientific calculator and RPN with the new iPhone calculator. Thanks to the RPN mode you will be able to calculate sums at great speed which greatly reduces the typing. With a simple and uncluttered interface design, this calculaor includes 54 mathematical functions such as : basic functions like natural logarythms, square roots and factorials trigonometry (simple and hyperbolic) it convertes polar and rectangular coordinates, decimal hours, hours, minutes and seconds it can calculate degrees and radiansAnd much moreThis calculator uses the very efficient and much talked about RPN system used by engineers and scientists, now on iPhone.

  • size 23.4 MB
  • version 3.0.6

Logos | RPN Calculator

Logos is a calculator designed with the Reverse Polish Notation at its core. Reverse Polish notation (RPN) is a mathematical notation in which every operator follows all of its operands, allowing for extreme efficiency and clarity. FEATURES:* RPN Based: Enter your operands first, then your operators* Stack Preview: Your current Equation is displayed above the Result* Advanced Mathematical/Scientific Views* Calculate with Degrees or Radians* Supports Scientific Notation* Memory Storage and Retrieval * Graphing Calculator * Custom Logs * Specific Error Messages Functions:* Percent * Sum* Inverse Trigonometry * Calculus Functions* Algebraic Programs* Custom Logs* Custom Exponents * Factorials* Combinations and Permutations * Pi and e Constants * And Many More Now you can do any calculations in the RPN way on the go.

  • size 10.9 MB
  • version 1.3