Description:RPN-97 Pro is a professional RPN calculator app inspired by classic programmable desktops, built for fast, precise everyday calculation. It streamlines your workflow with true Reverse Polish Notation, saving keystrokes and reducing errors. Core features include a visible RPN stack, keystroke programmability, comprehensive scientific and financial functions, and a virtual paper-tape history you can review and share. With a clean interface, high-precision math engine, and offline reliability, it fits engineers, students, and finance professionals alike. If you are looking for a powerful RPN calculator app, a programmable calculator for repeat tasks, or an accurate scientific calculator for productivity, RPN-97 Pro is an efficient choice.
How to use:1. Download and launch the app, then pick your preferred layout, angle mode, and theme in Settings.
2. Enter numbers first, press operations after; tap Enter to push values to the stack and use stack keys like Swap or Roll to manage entries.
3. Use key groups for common tasks: scientific functions for trig, logs, and powers; financial functions for cash flows or time value calculations; store and recall with memory registers.
4. Record keystroke programs to automate routines, save them with labels, assign to custom keys, and run them with different inputs.
5. Open the tape to review your calculation history, copy or share results as text, and clear or archive when finished.