Best Mathematical Calculator Apps

249+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated August 2026

Looking for free mathematical calculator apps? 19 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Mathematical Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Scientific Calculator fx-991Scientific Calculator fx-991Free4.5★ (391)YesYesAug 2026
2Calculator #Calculator #Free4.6★ (36K)YesYesSep 2026
3Calculator₊Calculator₊Free4.7★ (1.7M)YesYesSep 2026
4Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoSep 2026
5Calculate84Calculate84Free4.8★ (53K)YesYesSep 2026
6Scientific Calculator Plus 991Scientific Calculator Plus 991Free4.7★ (12K)YesYesSep 2026
7CalculatorCalculatorFree4.5★ (146K)YesYesSep 2026
8Calculator HD Pro LiteCalculator HD Pro LiteFree4.6★ (51K)YesNoSep 2026

Top Picks for Mathematical Calculator

Scientific Calculator fx-991#1

Scientific Calculator fx-991 by Dinh Phuc

Step-by-step Math Solver
Editor's Choice
📚 Education
4.5(391 ratings)
FreeAdsIn-App Purchases
Scientific Calculator fx-991 screenshot 1
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Scientific Calculator fx-991 screenshot 4
Scientific Calculator fx-991 screenshot 5
Scientific Calculator fx-991 screenshot 6

This app provides a powerful scientific calculator with step-by-step solutions for equations, advanced functions, and graphing capabilities. It includes a formula library and unit converter, inspired by a popular Casio model, to aid in learning and problem-solving for math and science subjects.

Calculator ##2

Calculator # by Incpt.Mobis

Scientific Calculator
Strong Contender
🔧 Utilities
4.6😐(36K ratings)
FreeAdsIn-App Purchases
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Calculator # screenshot 2
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Calculator # screenshot 6

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

What We Love

  • 👍 Easy to use
  • 🚀 Powerful functionality
  • 💡 Helpful for math classes
  • ⭐ Great for students

Room to Improve

  • 🔍 Confusing interface after update
  • 📢 Too many intrusive ads
  • 💰 Paywall for advanced features
Calculator₊#3

Calculator₊ by Impala Studios

Basic, Scientific, Plus Calc
Worth Considering
🔧 Utilities
4.7😞(1.7M ratings)
FreeAdsIn-App Purchases
Calculator₊ screenshot 1
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This app offers a comprehensive suite of calculation tools, including basic, scientific, and unit conversion functions. It features an AI-powered math solver that can solve problems from photos and a dedicated math notes section for jotting down equations and diagrams. Accessibility options like dynamic text size and VoiceOver support are also included.

What We Love

  • 💻 Useful calculator features
  • 🎨 Customizable backgrounds and themes
  • 📚 Helpful history tracking

Room to Improve

  • 📺 Intrusive full-screen ads
  • 💰 Expensive subscription model
  • 🔍 Ads blocking calculator functionality

More Mathematical Calculator apps to explore

4
Calculator for iPad!
Calculator for iPad!
Calculator for iPad!
Basic & Scientific Calculator
Free

This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.

Basic and scientific calculator modesOver 30 scientific operationsCustomizable appearance (iPad)
🔧 Utilities
(61K)
free
5
Calculate84
Calculate84
Calculate84
Intended for use with TI-84
Free

This app offers a modern graphing calculator experience on your iPhone. It features fast, interactive touch-screen graphing, scrollable windows, and intelligent error messages for a more intuitive user experience. Designed to be a usable alternative to physical graphing calculators.

Fast, interactive touch-screen graphingScrollable windowsIntelligent error messages
📚 Education
(53K)
free with in-app purchases
6
Scientific Calculator Plus 991
Scientific Calculator Plus 991
Scientific Calculator Plus 991
NCalc & CalcES Calculator 115
Free

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

Natural display inputGraphing moduleFormula library
📚 Education
(12K)
free with in-app purchases
7
Calculator
Calculator
Calculator
by The App Tower Inc.
Free

This utility app offers a straightforward calculation experience with a vast selection of over 80 customizable themes. Personalize your calculator's appearance to suit your style while performing everyday math tasks.

Basic calculationsOver 80 themesTheme customization
🔧 Utilities
(146K)
free with in-app purchases
8
Calculator HD Pro Lite
Calculator HD Pro Lite
Calculator HD Pro Lite
Basic & Scientific Calc
Free

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Dual-line displayCalculation historyFull scientific functions
🔧 Utilities
(51K)
ad-supported
9
Calculator⁼
Calculator⁼
Calculator⁼
Fraction, Scientific Calc +
Free

This app offers a clean and intuitive interface for both basic arithmetic and advanced scientific calculations. It includes a history tape to review past computations and supports various mathematical operations, making it suitable for everyday use and complex problem-solving.

Basic & Scientific CalculatorLive Currency ConverterHistory Tape
🔧 Utilities
(358K)
free with in-app purchases
10
HiPER Scientific Calculator
HiPER Scientific Calculator
HiPER Scientific Calculator
by Jindrich Houska
Free

This app offers advanced scientific calculation capabilities, including symbolic algebra, equation solving, and calculus functions. It supports high precision, natural expression input, and various display formats. Users can also visualize functions and equations with 2D and 3D graphing.

Symbolic algebraIntegrals and derivativesHigh precision calculations
🔧 Utilities
(243)
free with in-app purchases
11
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.

Basic & Scientific CalculatorAdvanced Scientific FunctionsLive Currency Converter
🔧 Utilities
(126K)
free with in-app purchases
12
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

Large buttonsClear displayFast calculations
🔧 Utilities
(409K)
ad-supported
13
Graphing Calculator X84
Graphing Calculator X84
Graphing Calculator X84
Designed for use with Ti-84
Free

This app offers a free, powerful alternative to hardware graphing calculators. It supports basic to complex math, including graphing, statistics, and matrix operations, with a built-in user manual for assistance.

Graphing of functionsStatistics and regression analysisMatrix operations
📚 Education
(50K)
free with in-app purchases
14
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Symbolab - AI Math Solver App
Calculator & Photo Solver
Free

Solve any math problem by typing it in or taking a photo. Get step-by-step solutions for subjects from pre-algebra to calculus. This AI-powered tool offers personalized learning and insights for over 300 million users.

Photo math solverStep-by-step solutionsCalculus calculator
📚 Education
(26K)
free with in-app purchases
15
Calculator: AI Math Solver Pro
Calculator: AI Math Solver Pro
Calculator: AI Math Solver Pro
Smart Math Calculator For All
Free
🔧 Utilities
(0)
16
Calculator You Like
Calculator You Like
Calculator You Like
Classic scientific calculator
Free

This app offers a classic scientific calculator with both simple and engineering modes. It allows users to save calculations, customize the background with personal images, and preview expressions. It supports a range of Apple devices and includes dark/light modes.

Simple and engineering calculator modesCalculation history with notes and sharingCustomizable background and color themes
🔧 Utilities
(0)
free with in-app purchases
17
Calculator +
Calculator +
Calculator +
Graphing, Percentage, Triangle
Free

This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.

Free basic and scientific calculatorIntuitive interface with equation and result displayFraction and percent support
🔧 Utilities
(10K)
free with in-app purchases
18
Expressio Calculator
Expressio Calculator
Expressio Calculator
A scientific calculator
Free
📊 Productivity
(0)
19
Calculator: EasyCalc
Calculator: EasyCalc
Calculator: EasyCalc
Smart Calculator & Converter
Free
🔧 Utilities
(0)
20
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition
📚 Education
(6.3K)
free with in-app purchases

FAQ about Mathematical Calculator

What are the best mathematical calculator apps for iPhone?
Scientific Calculator fx-991 tops our mathematical calculator apps ranking as of August 2026, with a 4.5-star average from 391 App Store ratings, and it's free to download.
Yes — 19 of the top mathematical calculator apps we rank are free to download, including Scientific Calculator fx-991 and Calculator #.
Scientific Calculator fx-991 shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 249+ mathematical calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
This app functions as a powerful scientific calculator designed to help users solve math and science problems. It offers step-by-step solutions for equations, advanced mathematical functions, interactive graphing, an extensive formula library, and a unit converter.
Key features include a step-by-step equation solver, advanced scientific functions for algebra and calculus, a graphing mode to visualize functions, a comprehensive formula library for math, physics, and chemistry, and a unit converter. It also boasts an interface inspired by the Casio fx-991.