Let’s be honest – every phone comes with a calculator, but most of them are pretty basic. Whether you’re a student, working professional, or just someone who splits dinner bills a lot, a good calculator app can make life way easier. We’ve rounded up the best calculator apps out there, from super simple ones to powerful tools that do everything but your taxes (well, almost). Let’s check them out!
1. Photomath
Photomath is a revolutionary calculator app designed to help users understand and solve math problems using just their smartphone camera. Simply point your phone at a math equation – handwritten or printed – and the app instantly provides a step-by-step solution. Available on both iOS and Android, Photomath supports topics from basic arithmetic to calculus and statistics. Unlike traditional calculators, it’s built with learning in mind, offering multiple solving methods, custom visual aids, and thorough explanations for each step. The interface is clean, intuitive, and perfect for students, parents helping with homework, or anyone brushing up on their math skills. While the basic version is free, premium features unlock enhanced explanations and tips.
Key Highlights:
- Scan-and-solve functionality using your camera
- Covers a wide range of math: from elementary to college-level
- Step-by-step explanations for every solution
- Optional premium upgrade with extra insights
- Available on iOS and Android
Who It’s Best For:
- Students who want help understanding homework
- Parents assisting kids with math
- Anyone needing instant, visual math solutions
- Learners prepping for exams
2. Desmos Graphing Calculator
Desmos Graphing Calculator is a free, browser-based and mobile-friendly graphing tool designed for students, teachers, and math enthusiasts. Built with an elegant and interactive interface, Desmos lets users plot functions, create tables, animate graphs, and explore math in a highly visual and engaging way. Available as a web app and on iOS/Android, it stands out with its real-time graph updates and dynamic sliders that let you manipulate variables on the fly. Desmos also supports functions, tables, and inequalities, offering far more than basic graphing. It’s widely used in classrooms and standardized tests, with a strong focus on accessibility and educational resources for both students and teachers.
Key Highlights:
- Interactive graphing with real-time changes
- Supports functions, tables, inequalities, and sliders
- Free to use on the web and mobile platforms
- Used in standardized testing (SAT, etc.)
- Extensive teacher resources and classroom tools
Who It’s Best For:
- High school and college students in algebra or calculus
- Teachers looking for classroom math tech
- Users needing advanced, interactive graphing features
- Visual learners who benefit from dynamic math displays
3. MyScript Calculator
MyScript Calculator transforms your handwriting into live math calculations, merging the natural feel of pen-and-paper with smart technology. Available for both iOS and Android, it allows you to write equations with your finger or stylus, and it automatically interprets and solves them in real time. Whether you’re jotting down simple arithmetic or more complex trigonometric equations, the app processes it instantly and supports gestures like scratch-outs to delete and drag-and-drop to reorder elements. It even handles unknowns using “?”, supports multiple display formats like fractions or mixed numbers, and stores a history of your previous calculations. MyScript’s intuitive design and advanced handwriting recognition make it feel less like an app and more like magic on a screen.
Key Highlights:
- Handwriting-based calculator with instant results
- Use “?” to solve for unknowns
- Supports decimals, fractions, trigonometry, logarithms, and constants
- Drag and drop functionality and scratch-out editing
- Available on iOS and Android
Who It’s Best For:
- Users who prefer writing by hand over typing
- Students solving equations in a more natural format
- Visual learners who benefit from interactive input
- Anyone wanting a smarter, pen-and-paper-style calculator
4. Calculator Plus
Calculator Plus is a user-friendly calculator app developed by Digitalchemy, designed to make everyday calculations straightforward and efficient. Available on Android, iOS, and Amazon devices, it offers a clean interface with large buttons and clear numerals, ensuring ease of use for all users. One of its standout features is the ability to remember all your calculations, allowing you to review your history and past computations at any time. This makes it particularly useful for tasks like shopping, balancing checkbooks, or calculating taxes. The app also includes memory functions, percentage calculations, and supports horizontal mode for additional functionality. With over 50 million downloads and a 4.9-star rating on Google Play, Calculator Plus has proven to be a reliable tool for many users .
Key Highlights:
- Remembers all calculations for easy review
- Large buttons and clear numerals for better readability
- Supports basic arithmetic operations and percentage calculations
- Memory functions to keep track of results
- Available on Android, iOS, and Amazon devices
Who It’s Best For:
- Individuals needing a reliable calculator for daily tasks
- Users who appreciate a clear and straightforward interface
- Those who require a history of their calculations
- Anyone looking for a dependable calculator app across multiple platforms
5. Calc Pro
Calc Pro is a comprehensive calculator app developed by Panoramic Software Inc., designed to cater to both everyday users and professionals. Available on iOS, Android, and Windows platforms, it combines multiple calculators into one app, including standard, scientific (with RPN mode), graphing, and financial calculators. Additionally, it offers over 3,000 unit conversions across 19 categories and supports more than 150 currencies with daily updates. The app includes 10 financial worksheets, 8 statistical worksheets, and a vast library of mathematical and scientific constants. Its user-friendly interface and extensive functionality make it a versatile tool for various calculation needs .
Key Highlights:
- Combines 10 calculators: standard, scientific, graphing, financial, and more
- Offers over 3,000 unit conversions in 19 categories
- Supports 150+ currencies with daily updates
- Includes 10 financial and 8 statistical worksheets
- Features a comprehensive library of mathematical and scientific constants
- Available on iOS, Android, and Windows platforms
Who It’s Best For:
- Professionals requiring advanced calculation tools
- Students needing a versatile calculator for various subjects
- Users looking for an all-in-one calculator solution
- Individuals who frequently work with unit and currency conversions
6. Calzy
Calzy is a modern calculator app designed for iOS, iPadOS, and watchOS, offering a blend of functionality and aesthetics. Recognized with the Apple Design Award in 2018, it caters to users seeking both basic and advanced calculation features. One of its standout features is the “Memory Area,” allowing users to store and reuse multiple numerical values through drag-and-drop interactions. Calzy also offers a bookmarking feature, enabling users to save calculations with custom titles for future reference. With support for the latest iOS technologies, including Live Activity, Drag and Drop, Haptic Touch, and Face ID, Calzy ensures a seamless and secure user experience. The app is available for a one-time purchase of $4.99, with no additional in-app purchases.
Key Highlights:
- “Memory Area” for storing and reusing numbers
- Bookmarking feature with custom titles
- Support for Live Activity, Drag and Drop, Haptic Touch, and Face ID
- Available on iOS, iPadOS, and watchOS
- One-time purchase with no in-app purchases
Who It’s Best For:
- Users seeking a modern and aesthetically pleasing calculator app
- Individuals who frequently perform and revisit complex calculations
- Professionals and students requiring advanced features with a user-friendly interface
- Apple device users looking for seamless integration across iPhone, iPad, and Apple Watch
7. PCalc Lite
PCalc Lite is a powerful scientific calculator app designed for iOS devices, offering a wide range of features suitable for students, engineers, and professionals. It includes an optional Reverse Polish Notation (RPN) mode, multiple undo and redo capabilities, and a choice of button layouts to suit user preferences. The app also provides an extensive set of unit conversions and constants, a paper tape for calculation history, and support for hexadecimal, octal, and binary calculations. PCalc Lite is free to download and offers in-app purchases to unlock additional features such as more themes, scientific notation, and engineering functions. It also includes an Apple Watch app, allowing users to perform calculations directly from their wrist.
Key Highlights:
- Optional RPN mode with multi-line display
- Multiple undo and redo functions
- Extensive unit conversions and constants
- Paper tape for calculation history
- Support for hexadecimal, octal, and binary calculations
- Apple Watch app included
Who It’s Best For:
- Students and professionals requiring a versatile scientific calculator
- Users who prefer RPN mode for calculations
- Individuals needing extensive unit conversions and constants
- Apple Watch users looking for a convenient calculation tool
8. Numerical
Numerical is a minimalist calculator app for iOS that offers a unique approach to calculations. Instead of pressing an equals button, it continuously updates the result as you type, providing instant feedback. This real-time calculation feature allows for quick corrections and adjustments without the need to re-enter entire expressions. The app’s clean and intuitive interface ensures ease of use, making it suitable for both quick arithmetic and more complex calculations. Additionally, Numerical supports features like history tracking and expression editing, enhancing its functionality for everyday use.
Key Highlights:
- Real-time calculation updates
- No need to press equals
- History tracking for previous calculations
- Expression editing for easy corrections
- Clean and intuitive interface
Who It’s Best For:
- Users seeking a minimalist calculator app
- Individuals who prefer real-time calculation feedback
- Those needing quick corrections without re-entering expressions
- Anyone looking for a clean and intuitive calculator interface
9. Calcbot 2
Calcbot 2 by Tapbots is an intelligent calculator and unit converter designed for iOS, macOS, and watchOS. It features an easy-to-read history tape, expression view, intuitive conversion, and much more. Every calculation you enter gets saved to the history tape, allowing you to refer to calculations later or send them right back to your current calculation. The expression view allows you to see everything you have typed, ensuring you never forget what you entered or miss a typo. Calcbot 2 supports over 500 units across 22 different categories, including auto-updating currency rates. It also offers a favorites feature, rounding for currency, scientific functions, constants, iCloud sync, sounds & animations, and an Apple Watch extension.
Key Highlights:
- History tape for easy reference of previous calculations
- Expression view to see all entered calculations
- Over 500 units across 22 categories for conversions
- Favorites feature for quick access to frequently used calculations
- Rounding for currency and scientific functions
- iCloud sync for seamless experience across devices
- Sounds & animations for positive feedback during calculations
- Apple Watch extension for performing calculations on the go
Who It’s Best For:
- Users seeking an intelligent calculator with a clean and intuitive interface
- Individuals needing a versatile unit converter
- Those who prefer a calculator that keeps track of their calculation history
- Users looking for a calculator with scientific functions and constants
- Individuals who want a seamless experience across iOS, macOS, and watchOS
10. Graphing Calculator X84
Graphing Calculator X84 is a versatile and powerful calculator app designed to emulate the functionality of the TI-84 series calculators. Available on both Android and iOS platforms, this app caters to students, engineers, and anyone in need of advanced mathematical computations. It offers a comprehensive set of features, including basic arithmetic operations, complex number calculations, equation solvers, and support for parametric, polar, and sequence graphs. The app also supports parametric, polar, and sequence graphs, statistical functions, and a history tape for reviewing previous calculations. With its user-friendly interface and extensive capabilities, Graphing Calculator X84 serves as a reliable tool for tackling a wide range of mathematical tasks.
Key Highlights:
- Emulates TI-84 calculator functionality
- Supports parametric, polar, and sequence graphs
- Includes matrix operations and statistical functions
- Provides a history tape for reviewing calculations
- Available on both Android and iOS platforms
Who It’s Best For:
- Students requiring a graphing calculator for coursework
- Engineers needing advanced mathematical computations
- Individuals seeking a portable alternative to traditional graphing calculators
- Users looking for a comprehensive calculator app with a wide range of features
11. Calculate84
Calculate84 is a modern graphing calculator app designed for iOS devices, aiming to replicate the functionality of the TI-84 series calculators. Developed by Century Light LLC, it offers fast, interactive touch-screen graphing, intuitive navigation, and scrollable windows, eliminating the need for repetitive key presses. The app features intelligent error messages, a user-friendly interface, and is available for free, with additional features accessible through a paid membership. Calculate84 is suitable for students, professionals, and anyone in need of a reliable graphing calculator on their iPhone
Key Highlights:
- Fast, interactive touch-screen graphing
- Scrollable windows for easy navigation
- Intelligent error messages
- User-friendly interface
- Free to download, with optional paid membership for additional features
Who It’s Best For:
- Students requiring a graphing calculator for coursework
- Professionals needing a portable graphing solution
- Individuals seeking a modern, user-friendly calculator app
- Users looking for a free app with optional premium features
12. All-in-One Calculator
All-in-One Calculator is a comprehensive and user-friendly app designed to cater to a wide range of calculation and conversion needs. Available for both Android and iOS platforms, it offers over 75 tools, including a scientific calculator, unit and currency converters, and specialized calculators for finance, health, and more. The app features a clean interface with editable inputs, calculation history, and memory functions, making it suitable for students, professionals, and anyone requiring quick and accurate calculations. It also supports offline currency conversion with up-to-date exchange rates and provides widgets for quick access. All-in-One Calculator is free to download, with optional in-app purchases to remove ads and unlock additional features.
Key Highlights:
- Over 75 calculators and converters
- Scientific calculator with advanced functions
- Offline currency conversion with up-to-date exchange rates
- Editable inputs and calculation history
- Widgets for quick access
- Free to download with optional in-app purchases
Who It’s Best For:
- Students and professionals needing a versatile calculator
- Individuals requiring quick and accurate calculations
- Users looking for an app with a wide range of tools
- Anyone seeking a free calculator app with optional premium features
13. Calculator – Pad Edition
Calculator – Pad Edition is a versatile calculator app designed specifically for iPad users. It offers a sleek, flat UI that mirrors the original built-in iOS calculator, providing both basic and scientific calculation modes. In portrait orientation, users can perform standard arithmetic operations, while landscape mode unlocks advanced functions such as roots, powers, factorials, exponentials, divisions, and logarithms. Trigonometric functions like sine, cosine, tangent, and their inverse counterparts are also supported. Additionally, the app includes a fraction calculator, international currency conversion, unit conversions across various categories, and a tip calculator for quick calculations. It’s free to download with optional in-app purchases to remove ads and unlock additional themes.
Key Highlights:
- Flat UI design resembling the original iOS calculator
- Basic and scientific calculation modes
- Support for trigonometric and inverse trigonometric functions
- Fraction calculator for precise calculations
- International currency and unit conversions
- Tip calculator for quick calculations
- Free to download with optional in-app purchases
Who It’s Best For:
- iPad users seeking a native-looking calculator app
- Individuals needing both basic and scientific calculation capabilities
- Users requiring fraction, currency, and unit conversions
- Anyone looking for a free calculator app with optional premium features
14. The Calculator
The Calculator, developed by Impala Studios, is a versatile and user-friendly app designed for iOS and iPadOS users seeking reliable mathematical tools. Available for iPhone and iPad, it offers a basic calculator mode for everyday arithmetic and a scientific mode for advanced functions like trigonometry, logarithms, and exponentials. The app features a sleek, intuitive interface with customizable themes and supports currency conversions with up-to-date exchange rates, making it ideal for travelers and budgeters. A history log allows users to review past calculations, and the app supports multitasking on iPad for seamless use alongside other tasks. The Calculator is free to download, with optional in-app purchases to remove ads and unlock premium features like additional themes and ad-free navigation.
Key Highlights:
- Basic and scientific calculator modes for diverse needs
- Currency conversion with real-time exchange rates
- History log to track previous calculations
- Customizable themes for a personalized experience
- Multitasking support on iPad for efficient workflow
- Free to download with optional in-app purchases
Who It’s Best For:
- iOS users needing a straightforward calculator for daily tasks
- Travelers and shoppers requiring currency conversions
- Students and professionals tackling advanced mathematical functions
- Anyone seeking a free, customizable calculator with premium options
15. Calculator Pro+ for iPad
Calculator Pro+ for iPad, developed by Apalon Apps, is a versatile and user-friendly calculator designed specifically for iPad users. In portrait mode, it functions as a straightforward basic calculator, while in landscape mode, it transforms into a full scientific calculator, offering advanced mathematical functions. The app includes a universal converter that supports various categories such as currency, length, time, weight, pressure, temperature, fuel consumption, and speed. Additionally, it features a multitasking mode, allowing users to use Calculator Pro+ alongside other apps simultaneously. The app is free to download, with optional in-app purchases to remove ads and unlock additional themes.
Key Highlights:
- Basic calculator in portrait mode
- Scientific calculator in landscape mode
- Universal converter for various categories
- Multitasking mode for simultaneous app usage (may depend on the iPadOS version)
- Free to download with optional in-app purchases
Who It’s Best For:
- iPad users seeking a versatile calculator app
- Individuals needing both basic and scientific calculation capabilities
- Users requiring unit and currency conversions
- Anyone looking for a free calculator app with optional premium features
16. Intuitive Calculator
Intuitive Calculator is a free iOS app crafted to simplify mathematical calculations with a focus on clarity and ease of use. Designed for iPhone, iPad, and Mac (M1 or later), it features a clean interface that displays equations in a natural, textbook-like format, enhancing readability and minimizing errors. The app supports both basic arithmetic and advanced scientific functions, including trigonometry and logarithms, making it versatile for students and professionals. Key features include undo and redo options, copy-and-paste functionality, and swipe gestures on keyboard keys to access additional operations. A standout feature is its error detection system, which pinpoints mistakes in calculations and provides clear explanations, fostering a deeper understanding of math. With no ads or in-app purchases, Intuitive Calculator offers a seamless, educational experience for all users.
Key Highlights:
- Natural equation display for improved readability
- Supports basic arithmetic and scientific calculations
- Undo, redo, copy, and paste for flexible editing
- Swipe gestures on keys to access advanced functions
- Error detection with detailed explanations to aid learning
- Completely free with no ads or in-app purchases
Who It’s Best For:
- Students seeking an educational tool to master math concepts
- Users who prefer a clear, intuitive interface for calculations
- Individuals looking to learn from and correct calculation errors
- Anyone needing a reliable, ad-free calculator for iOS devices
17. Simple Calculator (Simple Mobile Tools)
Simple Calculator by Simple Mobile Tools is a minimalist, open-source app designed for Android users who prefer a straightforward and ad-free calculation experience. With a focus on privacy and user control, it offers essential functions like addition, subtraction, multiplication, division, percentages, and square roots. The app features a clean, material design interface with a soothing dark theme, ensuring ease of use and reducing eye strain. It includes a history log to review previous calculations and supports customizable widgets with adjustable text and background colors. Additionally, users can prevent the phone from sleeping while using the app for uninterrupted calculations. As part of the Simple Mobile Tools suite, it operates without unnecessary permissions or ads, prioritizing user privacy and stability.
Key Highlights:
- Basic arithmetic functions with percentage and square root operations
- History log to track previous calculations
- Customizable widgets with adjustable text and background colors
- Dark theme for a comfortable viewing experience
- Option to prevent the phone from sleeping during use
- Open-source, ad-free, and no unnecessary permissions
Who It’s Best For:
- Android users seeking a simple, ad-free calculator
- Individuals who value privacy and minimal permissions in apps
- Users who prefer a clean and customizable interface
- Anyone needing basic arithmetic functions without distractions
18. Calctan
Calctan is a feature-rich calculator app for iOS devices, offering both basic and advanced mathematical functions within a customizable interface. Designed with a minimalist aesthetic, it allows users to personalize the calculator’s appearance with over 100 pre-installed themes and options to adjust button shapes and spacing. Beyond standard arithmetic, Calctan supports advanced operations such as trigonometric functions, logarithms, exponents, and factorials, catering to a wide range of calculation needs. The app includes a history feature, enabling users to review and edit previous calculations, and supports iCloud synchronization for seamless access across devices. Additionally, Calctan offers split-screen functionality on iPad, allowing users to multitask efficiently.
Key Highlights:
- Over 100 customizable themes and adjustable interface elements.
- Supports 47 advanced mathematical functions, including trigonometry and logarithms.
- Calculation history with edit and review capabilities.
- iCloud synchronization for cross-device access.
- Split-screen support on iPad for enhanced multitasking.
- Available in multiple languages, including English, Spanish, and Japanese.
Who It’s Best For:
- Students and professionals requiring advanced mathematical computations.
- Users seeking a highly customizable calculator interface.
- Individuals who utilize multiple iOS devices and value synchronization.
- iPad users looking for efficient multitasking capabilities.
19. Style Calculator (iOS Style for Android)
Style Calculator, developed by AppAuxin, is a free Android app that brings the sleek, minimalist aesthetic of the iOS calculator to Android devices. Designed for users who appreciate simplicity, it offers basic arithmetic operations like addition, subtraction, multiplication, and division, with a clean interface featuring large, well-spaced buttons for easy input. Optimized for a wide range of Android devices, the app ensures smooth performance and accessibility for all ages. While it excels in replicating the iOS calculator’s look and feel, it focuses on straightforward calculations without advanced features, making it ideal for everyday tasks. The app is free to download, with optional in-app purchases to remove ads and enhance the user experience.
Key Highlights:
- Emulates the iOS calculator’s sleek, intuitive interface
- Supports basic arithmetic operations for daily use
- Clean, minimalist design with large, user-friendly buttons
- Optimized for various Android devices for reliable performance
- Free to download with optional in-app purchases to remove ads
Who It’s Best For:
- Android users who admire the iOS calculator’s aesthetic
- Individuals seeking a simple, no-frills calculator for basic math
- Users who prioritize a clean, accessible interface
- Anyone looking for a free calculator with minimal complexity
20. Google Calculator
Google Calculator is the official calculator app developed by Google for Android devices. It offers both basic arithmetic operations and advanced scientific functions within a clean and intuitive interface. Users can perform calculations such as addition, subtraction, multiplication, and division, as well as scientific operations like trigonometric, logarithmic, and exponential functions. The app supports both portrait and landscape orientations, adapting its layout accordingly to provide an optimal user experience. Additionally, it includes a history feature that allows users to review and reference previous calculations. Google Calculator is free to download and is regularly updated to ensure compatibility and performance.
Key Highlights:
- Performs basic arithmetic and advanced scientific calculations.
- Clean and intuitive user interface.
- Supports both portrait and landscape orientations.
- Includes a history feature for reviewing past calculations.
- Free to download with regular updates from Google.
Who It’s Best For:
- Android users seeking a reliable and straightforward calculator app.
- Individuals who require both basic and scientific calculation functionalities.
- Users who appreciate a clean interface without unnecessary features.
- Anyone looking for a free, ad-free calculator maintained by Google.
Conclusion
Calculator apps have evolved far beyond the basic functionality of default phone calculators, offering tailored solutions for students, professionals, and casual users alike. The 20 apps highlighted in this article – ranging from Photomath’s camera-based problem-solving to Desmos’s interactive graphing, MyScript Calculator’s handwriting recognition, and Calc Pro’s all-in-one versatility – demonstrate the diversity and power of modern calculator tools.
Generally, calculator apps enhance accessibility, learning, and efficiency. Educational tools like Photomath and Intuitive Calculator support students with step-by-step explanations and error detection, while professional-grade apps like Calc Pro and Graphing Calculator X84 handle complex computations. As technology advances, calculator apps continue to bridge the gap between traditional math and digital innovation, empowering users to tackle calculations with confidence and ease.
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