My RPN Calc5.10 - App Store

My RPN Calc is a versatile RPN calculator with a clean and minimalist interface for iOS. It is a scientific and financial calculator inspired by the Hewlett-Packard HP-10C series pocket calculators of the 80s, most notably the HP 12C and HP 15C models. It features classical 4 operations, logarithms, trigonometry, statistics, financial, and macros for easy programming. It also features complete support for complex numbers along with 2nd, 3rd, and 4th degree equations solving, numerical root finder and integration.

Though it is not a complete emulation of the HP-1xC, it can easily substitute them for all classical, scientific, statistical, and financial operations.

Exhaustive user manual with many practical examples is available on the home site of the application.

Summary of the main functions:
- RPN input
- Arithmetic functions (+, -, x, /, 1/x, +/-, etc)
- Trigonometry, logarithms, hyperbolic trigonometry
- Percentages (+, -, variation, total)
- Dates
- Complete complex numbers support
- Gaussian integers
- 2nd, 3rd, and 4th grade equations solving
- Macros for simple programming tasks
- Root finder for general purpose functions
- Numerical integration
- Conversions (temperature, distance, ...)
- Constants (universal, math, ...)
- Intégration with BaseCalc for radix conversions

Summary of the main statistical functions:
- 1- and 2-variable statistics
- Sums (Σx, Σx2, Σy, Σy2, Σxy)
- Mean, weighted mean, standard deviation
- Linear regression
- Correlation coefficient
- Linear estimation

Summary of the financial functions:
- Simple and compound interests
- Cash flow analysis (NPV, IRR)
- Depreciation (SL, DB, SOYD)

Latest Apple Watch support allows standard operations (classical arithmetic, trigonometric, and logarithmic function) to be executed straight from your wrist:
- RPN input
- Arithmetic functions (+, -, x, /, 1/x, +/-, %, etc)
- Trigonometry, logarithms

Version History - UI tweaks. 5.10 03/12/2023 - Horizontal layout.
- Slide Over and Split View.
- Support iOS 16.
- Fixes 5.0 02/05/2023 - iPhone 13 Pro Max
- iOS 15 4.4 11/27/2021 1) New UI default theme.
2) Minor UI fixes. 4.3 02/23/2020 - FIX conjugate and argument functions
- Apple Watch screen options
- iPhone Xs, Xs Max, Xr compatibility
- iPad 11" compatibility
- Apple Watch 4 support
- iOS 12 and watchOS 5 support 4.2 02/14/2019 iPhone X support
Fixes for iPad Pro 4.1 02/02/2018 - New Classic theme (Voyager style)
- Various small fixes 4.0.0 06/27/2017 FIX keyboard issue when tapping in the upper or lower part of a key 3.9.0 06/21/2017 - New conversion units (torque, force, SI, and fuel consumption)
- Minor UI fixes 3.8.0 03/21/2017 - New function to export numbers (integers) to BaseCalc for radix conversion and bits manipulation
- New function to import numbers (integers) from BaseCalc 3.7.0 03/14/2017 Correct the handling/display of infinite values 3.6.1 11/08/2016 New automatic conversion rules for runners (pace, speed, ...)
Miscellaneous fixes 3.6.0 07/21/2016 Ensure color scheme does not prevent the visibility of the texts
Minor fixes 3.5.1 06/05/2016 - Icons for constant and conversion groups
- Minors fixes 3.5.0 04/07/2016 Fix H.MS / H10 conversion 3.4.1 03/17/2016 - Custom color selection for unicolor layout
- Keyboard layouts fixes
- User's guide enhanced with examples for SOLVE and INTEG functions 3.1.0 01/20/2016 - SOLVE key to find the root of equations stored as main macro
- INTEG key to calculate the integral of the function stored as the main macro
- LCM key to calculate the least common multiples, including for Gaussian integers
- Macros are restored across sessions

The SOLVE and INTEG functions are executing against the main macro with the stack automatically filled with the value to evaluate, pretty much the same it occurred on the original HP calculators. See upgraded the user's guide on http://calc.lsrodier.net for complete instructions and details. 3.0.0 12/06/2015 New GCD function with support for Gaussian integers
Macro recording/playing indicator 2.3.0 11/16/2015 Color themes
Financial IRR function fix 2.2.0 11/09/2015 - iOS 9 and watchOS 2 compatibility
- Added functions and options on Apple Watch 2.1.0 10/14/2015 Apple Watch support ! 2.0.0 08/08/2015 New statistical registers view 1.0.4 06/03/2015 iPhone 6 and iPhone 6+ support
iOS 8 support
Corrections 1.0.3 12/16/2014 iPad support 1.0.2 03/30/2014 Support for conversions (temperature, distance, mass, ... ) and constants. 1.0.1 03/04/2014