i41CX+
Antonio Lagana
About this app
- Age 10
- Updated Aug 20, 2025
- OS IOS
Editor reviews
A professional HP-41CX scientific calculator and programmable RPN emulator designed for fast, reliable work on mobile. Ideal for engineers, students, and power users who need a powerful scientific calculator app with keystroke programming and flexible expansion. Delivers high-precision results, quick input, and seamless program management to boost productivity in the field or office.
Core features:
- Authentic RPN scientific calculator with keystroke programming and labels for repeatable workflows
- Built-in module library and customizable key overlays to add advanced math, engineering, and finance functions
- Import and export programs and data, print or share results as PDF, and back up to cloud storage
Perfect for users seeking an RPN calculator app, HP-41CX emulator, programmable scientific calculator, and high-efficiency mobile utilities for STEM and finance
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How to use:
1. Download and open the app, then visit Settings to choose a keyboard layout, display style, and preferred options.
2. Perform calculations by entering numbers first and then tapping operators; use the stack display, STO/RCL keys, and common math functions to speed up everyday work.
3. Record a program by switching to program mode, entering steps as keystrokes, assigning a label, and saving it for one-tap reuse.
4. Add functionality by loading modules from the library and customizing key overlays to surface your most-used functions.
5. Share and back up by exporting programs and results to Files or iCloud, and print or save outputs as PDF for reports or documentation.