Reverse polish notation calculator for iPhone, iPad, and Apple Watch
The app provides a reverse polish notation calculator for iPhone, iPad, and Apple Watch. It offers a clean interface with essential functions for quick calculations.
by James Mattis★ 4.45 ratingsUtilities$0.99Data updated 2026-09-09
Perform complex calculations using ten built-in calculators. Access ten financial worksheets for budgeting, loans, and investments. Input formulas, view results, and save calculations. Export data as PDF or text. Switch between light and dark modes.
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.
The app offers scientific calculator functions and RPN mode for fast calculations. Its uncluttered interface uses the RPN system favored by engineers and scientists.
Perform general calculations including addition, subtraction, multiplication, division, and square roots. Use memory functions for storage and retrieval. Apply thousands separators and handle numbers up to 60 digits.
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.
The app offers a financial calculator with RPN entry and functions matching the HP-12C. It features visible financial registers, a two-line display, and program lines showing function names for easier use.
A scientific calculator with RPN input. Perform complex calculations, access trigonometric and logarithmic functions. Store and recall values. Use a simplified keyboard layout for easier navigation.
Perform arithmetic operations with a simple interface. View current calculations and track history. Supports universal device compatibility. No advanced or engineering functions included.
Create and analyze mathematical functions with interactive graphing. Manipulate equations, zoom, and pan graphs. Access a clean interface with logically placed tools. View detailed error messages and scroll through results without navigation clutter.
Perform complex calculations with customizable formulas and equation solving. Save and reuse calculations. Convert units and manage multiple profiles. Export results and access advanced functions like matrix operations and statistical analysis.
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 past entries.
Simulate the HP-38C calculator with real-time input and output. Perform financial calculations, program custom functions, and use reverse Polish notation. Supports HP-12C compatibility for most operations.