Description
An RPN calculator isn't just a tool for getting answers like a traditional exam calculator—it's a way of thinking. It mirrors how you naturally break problems into steps, making it more like an extension of your mind than a shortcut.
A full HP-style RPN scientific calculator — on iPhone and iPad, offline, with no ads or tracking.
47 Calculator is a programmable Reverse Polish Notation scientific calculator. Trigonometry, logarithms, statistics, probability, finance, complex numbers, base conversions, matrix operations, numerical solvers — the full 47-series instruction set, in your pocket.
Free includes the calculator, a program editor for reading and writing 47-series programs, reference documentation, and a full tutorial library — probability and statistics, finance, numerical methods, programming patterns, advanced RPN techniques.
The Pro version adds the Explorer — browse every menu, flag, mode, and operation the engine supports, searchable and cross-linked.
Works fully offline after first launch. Light and dark themes. No ads, no third-party analytics, no tracking, no account required.
Nouveautés (v1.8)
v1.8
-Added Label Mode in Themes to hide unfocused labels
-Updated sound haptic feedback
-Alphabet letters highlight for text input modes
-Added a Command search to the Explorer tab
-Shortcut keys will recognize the keyboard in Alpha Search Mode
-Changed the color sliders to collapse for more space
-Added Button Text, Color, Size, & Brightness sliders