Best Casio Calculator Apps

221+ iOS apps curated and reviewed

4.4 avg rating
19 free apps
Updated May 2026

Scientific Calculator fx is the household name in casio calculator, but it's far from the only option. We track 221+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Top Picks for Casio Calculator

Scientific Calculator fx-991#1

Scientific Calculator fx-991 by Dinh Phuc

Step-by-step Math Solver
Editor's Choice
📚 Education
4.5(344 ratings)
FreeAdsIn-App Purchases
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Enhance your math skills with the ultimate scientific calculator app designed for students and professionals. From step-by-step solutions to instant access to key formulas, HiEdu Calculator simplifies complex calculations and provides a vast library of functions. Perfect for standardized test preparation or everyday classwork - transform your educational journey today!

Scientific Calculator Plus 991#2

Scientific Calculator Plus 991 by Tran Duy

Designed for math calculator
Strong Contender
📚 Education
4.7😊(12K ratings)
FreeAdsIn-App Purchases
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A versatile scientific calculator app designed for math enthusiasts, offering features like natural display for textbook-like equations, symbolic and numeric modes, complex number calculations, calculus functions, statistical analysis, and unit conversion. With a premium upgrade option for additional advanced features and customization. Access the power of NCalc FX now!

What We Love

  • 👍 Intuitive and easy to use
  • 🚀 Powerful and feature-rich
  • 💡 Customizable interface and settings
  • 🔍 Extensive library of formulas and equations

Room to Improve

  • 🐛 Occasional bugs and input issues
  • 🔀 Confusing layout and button placement
  • 💰 Some advanced features locked behind paywall
HiPER Scientific Calculator#3

HiPER Scientific Calculator by Jindrich Houska

Worth Considering
🔧 Utilities
4.6(207 ratings)
FreeAdsIn-App Purchases
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An advanced scientific calculator with powerful features like symbolic algebra, equations, integrals, and derivatives. Supports up to 100-digit calculations, various layouts for different devices, and a wide range of functions including matrices, statistics, complex numbers, and more. Explore its capabilities and functions today!

More Casio Calculator apps to explore

4
Calculate84
Calculate84
Calculate84
Intended for use with TI-84
Free

A modern graphing calculator application designed for iPhone users, offering fast and interactive touch-screen graphing with intuitive features and intelligent error messages. Created by individuals who found existing graphing calculator apps lacking, it is continually improved with feedback from students. Visit the app's website for Privacy Policy and Terms of Use.

📚 Education
(52K)
5
Calculator₊
Calculator₊
Calculator₊
Basic, Scientific, Plus Calc
Free

Try Calculator₊, the ultimate mathematics tool offering basic, scientific, and plus calculations. Ideal for homework, exams, and managing expenses, this app is like having a personal math tutor on your phone. Download now for easy and intuitive math solutions!

🔧 Utilities
(1.7M)
6
Simple Calculator.
Simple Calculator.
Simple Calculator.
Basic Casio-style calculator
Free

This app is a basic calculator with tax and business functions, designed for professionals and small business owners. It features 12 digits, tax calculation, percentage calculation, memory operations, grand total, square root, sign change, and more. Check it out for simple and efficient calculations on your iPhone/iPad.

🔧 Utilities
(1.4K)
7
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

Calculate complex mathematical equations effortlessly with this intuitive app. Simplify your calculations on the go with advanced features like graph plotting and equation solving. Download now to supercharge your math skills!

🔧 Utilities
(36K)
8
ClassWiz Calc App QR
ClassWiz Calc App QR
ClassWiz Calc App QR
by CASIO COMPUTER CO., LTD.
Free
📚 Education
(6)
9
Panecal Scientific Calculator
Panecal Scientific Calculator
Panecal Scientific Calculator
For engineers and students
Free

A scientific calculator app designed for engineers and students, offering features like formula display, quick editing, memory functions, and various calculation modes. Improve accuracy and efficiency with easy formula navigation and editing tools. Explore advanced functions for different number systems and mathematical operations.

🔧 Utilities
(1.9K)
10
Citizen Calculator App
Citizen Calculator App
Citizen Calculator App
The Calculator: GST Calculator
Free

This application is a citizen calculator with features like basic math operations, GST calculation, and citizen-specific functions for easy day-to-day business calculations. It has a beautiful design, large buttons, clear and backspace functions, and provides sound and vibration feedback for a realistic calculator experience.

🔧 Utilities
(300)
11
Calculator for iPad!
Calculator for iPad!
Calculator for iPad!
Basic & Scientific Calculator
Free

Quickly crunch numbers with our user-friendly iPad calculator app that offers basic and scientific functions. Download now for accurate calculations on the go!

🔧 Utilities
(60K)
12
Scientific Calculator - Cal
Scientific Calculator - Cal
Scientific Calculator - Cal
A Better Scientific Calculator
Free

This scientific calculator allows users to input expressions naturally and calculate results instantly, with features such as percentage calculation, trigonometric functions, and result history. With a simple and powerful interface, it offers various settings, offline availability, and a sleek design, making it a useful tool for mathematical calculations.

🔧 Utilities
(0)
13
Desmos Graphing Calculator
Desmos Graphing Calculator
Desmos Graphing Calculator
by Desmos, Inc.
Free

Explore math with a powerful graphing calculator application that allows you to plot various equations, use sliders for interactive adjustments, create tables for data input, analyze statistics, and more. Visit the website to access the free browser version and enhance your mathematical skills today.

📚 Education
(1.3K)
14
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

A calculator app with a built-in history feature that keeps track of your calculations without any ads. Calculate effortlessly and access your past computations instantly.

💰 Finance
(23K)
15
Taculator 84 Graphing Calc
Taculator 84 Graphing Calc
Taculator 84 Graphing Calc
Statistics, Matrix + Graph
Free

Get advanced math functions, statistics, matrices, and graphing capabilities with this all-in-one calculator app designed for high school and college students. Perfect for mastering pre-algebra, algebra, and more. Download now for a smarter way to calculate and visualize data.

📚 Education
(7.5K)
16
SFX Calc
SFX Calc
SFX Calc
Scientific Calculator
Free

This scientific calculator app is designed for academic, scientific, and engineering purposes, offering a range of features including basic arithmetic, memory storage, fraction and percentage calculation, and advanced functions like linear regression, statistics, and trigonometric calculations. Download now to experience a user-friendly interface similar to a Casio scientific calculator and perform complex calculations with ease.

🔧 Utilities
(137)
17
CASIO ClassPad
CASIO ClassPad
CASIO ClassPad
by CASIO COMPUTER CO., LTD.
Free

This math learning app offers advanced calculations, graphing, and computer algebra system tools, mimicking a popular handheld device used in classrooms. With a subscription, users access various apps and functions, including eActivity, Spreadsheet, Geometry, and Physium, plus over 300 math functions, to enhance their math and science studies.

📚 Education
(11)
18
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

A powerful math solver and scientific calculator for iPad and iPhone, featuring advanced functions and quick calculations. Share your results easily and master your business expenses with percentage calculations. Get it now!

🔧 Utilities
(126K)
19
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

An advanced scientific graphing calculator app that is user-friendly and suitable for basic to advanced mathematics, offering a powerful math core and extensive support features. Ideal for engineers, math students, and more, with built-in documents for various calculations. Explore the world of advanced mathematics with ease and efficiency.

📚 Education
(12K)
20
Calculator +
Calculator +
Calculator +
Scientific Calc Plus Fraction
Free

Experience the award-winning calculator app for iPad and iPhone, offering a free basic and scientific calculator with an elegant design, simple usability, and beautiful interface. Calculate with ease and precision today!

🔧 Utilities
(9.6K)