Fantastic Calculator
This is my new favorite calculator - and I have most of them! Very well done!
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About
This scientific calculator uses Reverse Polish Notation (RPN) to help you break down complex problems. It offers a full 47-series instruction set with advanced functions and a program editor. The free version includes extensive tutorials and documentation.
✓RPN scientific calculator
✓47-series instruction set
✓Program editor
✓Tutorial library
✓Offline functionality
✓Light and dark themes
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What's New in R47 RPN Calculator
1.9
June 10, 2026
v1.9 -Updated Firmware to 00.109.03.03b0 -Rejig was updated to 0.27.0 -Added a Random Theme Generator -Reorganized theme sliders -UI improvements -Added Long press to copy X to clipboard -Updated Keyboard Shortcuts -Improved Pause in programs
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In-App Purchases
$4.99
Pro Pack
Enables Key & Menu explorer while using the calculator.
User reviews
FAQ
What is RPN and how does R47 RPN Calculator use it?
RPN, or Reverse Polish Notation, is a calculator input method where operators follow operands. R47 RPN Calculator uses this method to mirror how you naturally break down problems into steps, making it an extension of your thinking process rather than just a shortcut.
Does R47 RPN Calculator work offline?
Yes, R47 RPN Calculator works fully offline after its initial launch. This ensures you can access its powerful scientific calculation and programming features without needing an internet connection.
What advanced functions are available in R47 RPN Calculator?
The calculator supports trigonometry, logarithms, statistics, probability, finance, complex numbers, base conversions, and matrix operations, all within the full 47-series instruction set.
What is included in the free version of R47 RPN Calculator?
The free version includes the core RPN calculator, a program editor for reading and writing 47-series programs, reference documentation, and a comprehensive tutorial library covering various mathematical and programming topics.
What does the Pro version of R47 RPN Calculator offer?
The Pro version unlocks the 'Explorer' feature, allowing you to browse every menu, flag, mode, and operation the calculator engine supports. This feature is searchable and cross-linked for easy navigation.
Is R47 RPN Calculator suitable for younger users?
R47 RPN Calculator has an age rating of 4+, making it accessible for a wide range of users. Its educational focus on problem-solving can be beneficial for learning.
How often is R47 RPN Calculator updated?
The latest version, 1.9, was released on 2026-06-10, indicating active development and regular updates to improve functionality and reliability.
Does R47 RPN Calculator have ads?
No, R47 RPN Calculator is advertised as having no ads. It also avoids third-party analytics and tracking, and does not require an account for use.