Best apps like Calccis

10+ similar apps compared and reviewed

4.5 avg rating
10 free apps
Updated September 2026

Looking for something like Calccis? 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 Calccis

RLM-11CX#1

RLM-11CX by Ricardo Lira Matte

Scientific & Programable
Editor's Choice
🔧 Utilities
3.1(7 ratings)
FreeIn-App Purchases
RLM-11CX screenshot 1
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This app is a scientific and programmable calculator designed for science and engineering, replicating the functionality of the HP-11C. It offers extensive features for finance, business, statistics, complex numbers, and unit conversions, with a programmable interface for custom calculations.

Calculator365: All-In-One Calc#2

Calculator365: All-In-One Calc by 晖明 甘

Scientific, Fraction & Unit
Strong Contender
🔧 Utilities
4.7(83 ratings)
FreeAdsIn-App Purchases
Calculator365: All-In-One Calc screenshot 1
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This comprehensive utility app offers a wide range of calculators for everyday and advanced needs, including scientific, unit conversion, financial, and health calculations. It features an editable input, history, and customizable themes for a seamless user experience on iPhone and iPad.

RePNCalc - RPN Calculator Pro#3

RePNCalc - RPN Calculator Pro by Michael Redig

Easy Reverse Polish Notation
Worth Considering
🔧 Utilities
5.0(1 ratings)
FreeIn-App Purchases
RePNCalc - RPN Calculator Pro screenshot 1
RePNCalc - RPN Calculator Pro screenshot 2

This utility app offers a Reverse Polish Notation (RPN) calculator experience for iOS devices. It features customizable key layouts via swipe gestures and long-press options for stack items. External keyboard support is also available.

More apps like Calccis

4
A Complex Calc
A Complex Calc
A Complex Calc
Exact Complex Calculator
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Perform complex calculations with a modern, user-friendly interface. Offers both basic and scientific modes, including support for complex numbers and advanced functions. This lightweight application provides a history of computations and is completely free with no advertisements.

Complex number supportBasic and Scientific modesHistory of operations
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SwiftRPN
SwiftRPN
SwiftRPN
by Patrick Gelvin
Free
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Calculator for Complex Field
Calculator for Complex Field
Calculator for Complex Field
Everyday + professional uses
Free

Input natural math expressions and get instant results on a separate line, allowing for easy revisions. Save up to 20 inputs and incorporate saved answers into new expressions. Supports complex field calculations with adjustable decimal digits and three output formats.

Natural math expression inputAutomatic result displayInput revision for updated results
🔧 Utilities
(4)
free
7
RLM-10CX
RLM-10CX
RLM-10CX
Scientific Calculator
Free

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.

Finance and Business calculationsDate and Time interval calculationsAdvanced Statistics and Curve Fitting
🔧 Utilities
(1)
free
8
ThetaCalc
ThetaCalc
ThetaCalc
by Felix Stehli
Free

This utility app provides a Reverse Polish Notation (RPN) calculator. Users can extend its functionality by programming custom functions and equations using JavaScript.

Reverse Polish Notation (RPN) calculatorUser-programmable functionsJavaScript equation support
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9
Complex RPN Calculator
Complex RPN Calculator
Complex RPN Calculator
Complex Numbers RPN Calculator
Free

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.

Complex number supportFour-level stackPolar and rectangular formats
🔧 Utilities
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10
bcRPN
bcRPN
bcRPN
by Paul Wilkins
Free

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.

Reverse Polish Notation (RPN) inputComplex number calculationsExtended precision math
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