This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.
ThetaCalc by Felix Stehli
Editor's Choice
🔧 Utilities
4.3(4 ratings)
Free
Best apps like CMCalc
10+ similar apps compared and reviewed
4.7 avg rating
8 free apps
Updated July 2026
Looking for something like CMCalc? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.
Top Alternatives to CMCalc
bcRPN by Paul Wilkins
Strong Contender
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4.8(4 ratings)
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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.
5.0(1 ratings)
FreeIn-App Purchases
This scientific calculator offers a comprehensive suite of tools for finance, business, statistics, and complex scientific calculations. It emulates a classic calculator while leveraging modern iOS device capabilities for ease of use and advanced functions.
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This app faithfully recreates the TI-57 programmable calculator, offering its full scientific functions and programming capabilities. It includes a user manual, sample programs, and features like turbo speed and alphanumeric display.
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inBinary
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Convert numbers between decimal, binary, hexadecimal, and octal systems. Look up ASCII characters by code or symbol, and perform bitwise operations like NOT, AND, and OR on numbers in various bases.
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SFX Calc Premium
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This scientific calculator offers advanced functions for academic, scientific, and engineering needs. It supports basic arithmetic, memory storage, statistical calculations, and various mathematical functions. The interface mimics a popular Casio model for ease of use.
Basic arithmetic operationsConstant and volatile memory storageFraction and percentage calculations
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Dozecal
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This educational calculator promotes the use of Base Twelve (duodecimal) in math and science. It offers standard mathematical functions in both duodecimal and decimal modes, with automatic conversion between them. It utilizes Reverse Polish Notation (RPN) for calculations.
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Hex Calculator Pro
Hex, Binary, Decimal Number
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This app provides a versatile calculator for hexadecimal, binary, and decimal number systems. It offers seamless number conversions between these bases and supports basic arithmetic operations. Ideal for programmers, engineers, and students needing to work with different number bases.
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