10+ similar apps compared and reviewed
Whether you want more options like Rpn Calculator SW or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.
This scientific calculator utilizes a four-level stack and natively handles complex numbers. It allows users to input and view numbers in both polar and rectangular formats, remembering its state and offering 10 memory locations.
This scientific calculator app for iPad offers a clean RPN interface with basic and advanced functions. It supports high precision calculations and provides an extensive, user-extendable database of scientific constants.
This utility app functions as a Reverse Polish Notation calculator. It handles complex numbers and utilizes extended precision for all calculations, offering an unlimited stack depth and an undo feature for up to 10 operations.
This app faithfully recreates the 1975 HP-21 pocket scientific calculator, offering RPN functionality and a full suite of mathematical, trigonometric, and logarithmic functions. It features a 10-digit LED display, stack and storage registers, and a keystroke log for detailed operation tracking.
This advanced scientific calculator simulates the classic HP-42S RPN calculator with enhanced features. It offers algebraic expressions, unit conversions, directories for storage, a larger resizable display, financial functions, and 2D plotting with integral and root finding.
This app offers a highly accurate simulation of the classic HP-29C programmable scientific calculator. It features RPN input, extensive storage registers, and a wide range of mathematical and statistical functions. Users can program complex calculations, import/export programs, and view detailed program information.
This app faithfully recreates the HP-25C Programmable Scientific Calculator from 1976. It offers RPN input, a 10-digit LED display, and extensive mathematical functions. Users can program it with up to 99 steps and share programs via various methods.
