Best Calccis alternatives: apps like Calccis

10+ similar apps compared and reviewed

4.5 avg rating
10 free apps
Updated November 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

SwiftRPN#1

SwiftRPN by Patrick Gelvin

RPN At The Speed Of Light
Editor's Choice
๐Ÿ”ง Utilities
5.0(1 ratings)
Free
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This utility app provides a powerful Reverse Polish Notation (RPN) calculator with advanced features. It supports scalar types, vectors, and matrices, along with extensive built-in operators and unit conversions. Easily switch between number bases and visualize results.

Calculator for Complex Field#2

Calculator for Complex Field by Jongseung Park

Everyday + professional uses
Strong Contender
๐Ÿ”ง Utilities
5.0(4 ratings)
Free
Calculator for Complex Field screenshot 1
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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.

More apps like Calccis

4
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
๐Ÿ”ง Utilities
(1)
free
5
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
๐Ÿ”ง Utilities
(24)
free
6
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
๐Ÿ”ง Utilities
(9)
free
7
A Complex Calc
A Complex Calc
A Complex Calc
Complex Scientific Calc
Free

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
๐Ÿ”ง Utilities
(25)
free
8
RePNCalc - RPN Calculator Pro
RePNCalc - RPN Calculator Pro
RePNCalc - RPN Calculator Pro
Easy Reverse Polish Notation
Free

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.

Reverse Polish Notation (RPN) inputSwipe gesture key layout customizationLong-press stack item options
๐Ÿ”ง Utilities
(2)
free with in-app purchases
9
RLM-11CX
RLM-11CX
RLM-11CX
Scientific & Programable
Free

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.

Finance calculations (amortization, bond price, Black-Scholes)Business functions (break-even, currency exchange)Statistical analysis (regression, probability distributions)
๐Ÿ”ง Utilities
(7)
free with in-app purchases
10
HP-35
HP-35
HP-35
RPN Calculator. HP-35, 45, 21
Free

Emulates classic Hewlett Packard RPN scientific calculators from the 1970s. Experience the original HP-35, HP-45, and HP-21 models on your iPhone.

RPN calculator emulationHP-35 modelHP-45 model
๐Ÿ”ง Utilities
(66)
free