Apps Like Crimson Calculator 41cx for iPhone and iPad
Program and store calculations
A programmable RPN with continuous memory allows users to access the stack and LASTx using STO and RCL commands. It supports 200-2000 lines of program memory and label addressing with strings.
Crimson Calculator 41cx screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.


RPN-67 NP
Willy Kunz
Simulate HP-67 calculator functions
Load and run 25 original programs from the HP-67 calculator. Perform calculations using reverse Polish notation. Access a wide range of mathematical and scientific functions. Store and retrieve programs using magnetic card simulation.


RPN-25 CE
Willy Kunz
Calculate with photo-realistic precision
Simulate the HP-25C calculator with input method. Perform complex calculations, store and recall values, and use programmable functions. Access continuous memory for data retention. View and edit programs directly on the interface.

RPN-65 SD
Willy Kunz
Simulate HP-65 calculator
Simulate a programmable calculator with input. Run HP-65 programs, store and retrieve data from magnetic cards. View and edit calculator memory. Access historical documentation and user guides.

GO-25 SciRPN
Steve Lidie
Calculate with RPN and stack registers
Simulates a programmable scientific calculator with RPN input. Features a 10-digit LED display, four stack registers, and ten storage registers. Includes math, trigonometric, and statistical functions.

Elevate - Brain Training Games
Elevate Labs, LLC
Train your mind with personalized exercises
Train to improve focus, memory, speaking, processing speed, and math skills. Personalized programs adapt over time. Track progress with detailed reports. Set goals and receive feedback on performance. Sync across devices for continuous practice.

RPN-65 Pro
Willy Kunz
Simulate HP-65 calculator on iPad
Simulate a programmable calculator with magnetic card input. Run original HP-65 programs. View detailed manuals and technical specifications. Adjust calculator settings and interface layouts. Export calculations and program data.

RPN-35 SD
Willy Kunz
Calculate, organize, and manage tasks
Calculate mathematical expressions with scientific functions, trigonometry, and logarithms. Store and recall values. Adjust display settings for different modes. Export calculation history and share results via email or cloud storage.

Complex RPN Calculator
John Coddington
Scientific RPN calculator with complex numbers.
The app is a scientific RPN calculator. It has a four-level stack and complex numbers as its native number type.

RPN Calculator 48
Tom Kerrigan
Calculate with swipe gestures and large buttons
Perform calculations using reverse Polish notation. Swipe to undo or redo operations. Access a 100-entry stack and 6 memory buttons. View large, easy-to-read displays. Save state on exit. Supports scientific functions and multiple undo/redo levels.



11C Scientific Calculator
Vicinno Soft LLC
Calculate with RPN and functions
Perform complex calculations using RPN entry system. Access hyperbolic and inverse hyperbolic trig functions. Calculate probability, factorials, and percentages. Support absolute, integer, and fractional values. Generate random numbers.

Calculator HD Pro Lite
Cider Software LLC
Calculate with dual-line display and multi-line input
A with dual-line display showing input and result. Supports multi-line equations and tap-to-move cursor. Saves calculation history with timestamps and labels. Allows emailing calculations and swiping to review previous entries.

HP 15c Calculator
MORAVIA Consulting, spol. s r.o.
Calculate with precision and reliability
Perform complex calculations using RPN input. Access advanced mathematical functions and programming capabilities. Store and recall values with memory registers. Use a redesigned interface for enhanced usability.

▸ Calculator +
CAT VIET SOFTWARE DEVELOPMENT & MEDIA JSC
Calculate, convert, and solve equations
Perform complex calculations using 12 built-in calculators including scientific, financial, and unit conversion tools. Input formulas with three modes: standard, string, and RPN.


LXVII
Nick Tamburri
HP-67 RPN calculator emulator for OS X.
The app emulates the HP-67 RPN programmable calculator. It offers multiple active calculators, full memory visibility, and a paper tape register with various modes.

Coding For Kids: Learn To Code
KidloLand Kids & Toddler Games
To with fun games and challenges
Teaches through 200+ interactive games like firefighting and balloon popping. Helps improve problem-solving, memory, and logical thinking. Includes activities designed for school preparation.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.