Best Scientific Calculator Free Apps

249+ iOS apps curated and reviewed

4.6 avg rating
19 free apps
Updated August 2026

Calculator₊ is the household name in scientific calculator free, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top Scientific Calculator Free Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Calculator₊Calculator₊Free4.7★ (1.7M)YesYesAug 2026
2Scientific Calculator fx-991Scientific Calculator fx-991Free4.5★ (381)YesYesAug 2026
3Calculate84Calculate84Free4.8★ (52K)YesYesAug 2026
4Calculator HD Pro LiteCalculator HD Pro LiteFree4.6★ (51K)YesNoAug 2026
5Panecal Scientific CalculatorPanecal Scientific CalculatorFree4.8★ (1.9K)YesNoAug 2026
6Calculator #Calculator #Free4.6★ (36K)YesYesAug 2026
7Scientific Calculator Plus 991Scientific Calculator Plus 991Free4.7★ (12K)YesYesAug 2026
8Calculator for iPad!Calculator for iPad!Free4.7★ (61K)NoNoAug 2026

Top Picks for Scientific Calculator Free

Calculator₊#1

Calculator₊ by Impala Studios

Basic, Scientific, Plus Calc
Editor's Choice
🔧 Utilities
4.7😞(1.7M ratings)
FreeAdsIn-App Purchases
Calculator₊ screenshot 1
Calculator₊ screenshot 2
Calculator₊ screenshot 3
Calculator₊ screenshot 4
Calculator₊ screenshot 5
Calculator₊ screenshot 6

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
Scientific Calculator fx-991#2

Scientific Calculator fx-991 by Dinh Phuc

Step-by-step Math Solver
Strong Contender
📚 Education
4.5(381 ratings)
FreeAdsIn-App Purchases
Scientific Calculator fx-991 screenshot 1
Scientific Calculator fx-991 screenshot 2
Scientific Calculator fx-991 screenshot 3
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.

Calculate84#3

Calculate84 by Century Light LLC

Intended for use with TI-84
Worth Considering
📚 Education
4.8😊(52K ratings)
FreeAdsIn-App Purchases
Calculate84 screenshot 1
Calculate84 screenshot 2
Calculate84 screenshot 3
Calculate84 screenshot 4

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.

What We Love

  • 👍 Identical to TI-84 calculator
  • 🚀 Seamless and intuitive user experience
  • 💰 Affordable alternative to physical calculator
  • 📱 Convenient to have on phone

Room to Improve

  • 🐛 Occasional bugs and crashes
  • 🔍 Missing some advanced features like regression types
  • 🔒 Previous purchases removed without warning

More Scientific Calculator Free apps to explore

4
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
5
Panecal Scientific Calculator
Panecal Scientific Calculator
Panecal Scientific Calculator
For engineers and students
Free

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

Formula editing with cursor and swipeReuse past formulasVariable memory for calculations
🔧 Utilities
(1.9K)
ad-supported
6
Calculator #
Calculator #
Calculator #
Scientific Calculator
Free

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.

Math Photos SolverHandwriting RecognitionAI Math Problem Solver
🔧 Utilities
(36K)
free with in-app purchases
7
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
8
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
9
CalC - Scientific Calculator
CalC - Scientific Calculator
CalC - Scientific Calculator
Calculators for Math students
Free
📚 Education
(0)
10
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
11
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
12
Expressio Calculator
Expressio Calculator
Expressio Calculator
A scientific calculator
Free
📊 Productivity
(0)
13
SciCalc: Graphing Calculator
SciCalc: Graphing Calculator
SciCalc: Graphing Calculator
Scientific Math & Plotter
Free
🔧 Utilities
(0)
14
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
15
DrPhos Science Calculator
DrPhos Science Calculator
DrPhos Science Calculator
Scientific Math with Sig Figs
$0.99
📚 Education
(0)
16
Scientific Calculator Standard
Scientific Calculator Standard
Scientific Calculator Standard
Simple & Easy to use
Free

This application provides a straightforward scientific calculator with a history feature for recalling and editing past calculations. It supports standard mathematical notation and advanced functions like trigonometry and logarithms.

Calculation history recall and editingGeneral mathematical notationArithmetic operations
🔧 Utilities
(17)
free
17
LumioCalc: Math Calculator
LumioCalc: Math Calculator
LumioCalc: Math Calculator
Premium scientific calculator
Free

A fast and customizable scientific calculator for iPhone and iPad. It offers advanced functions, a scrollable history, and premium themes for a personalized user experience. Ideal for students, engineers, and everyday calculations.

Scientific calculator functionsDegree/radian modesFull expression support
🔧 Utilities
(1)
free with in-app purchases
18
Desmos Scientific Calculator
Desmos Scientific Calculator
Desmos Scientific Calculator
by Desmos
Free

This app offers a powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.

Basic arithmetic operationsTrigonometric functionsStatistical calculations
📚 Education
(332)
free
19
Scientific Graphing Calculator
Scientific Graphing Calculator
Scientific Graphing Calculator
Math Tools for Students
Free
📚 Education
(0)
20
Scientific Calculator & Units
Scientific Calculator & Units
Scientific Calculator & Units
Conversion Calculator & Unit
Free
🔧 Utilities
(0)

FAQ about Scientific Calculator Free

What are the best scientific calculator free apps for iPhone?
Calculator₊ tops our scientific calculator free apps ranking as of August 2026, with a 4.7-star average from 1.7M App Store ratings, and it's free to download.
Calculator₊ shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 249+ scientific calculator free apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Calculator₊ offers several subscription plans, including monthly and half-yearly options, with prices ranging from $0.99 to $3.99. Many plans include free trial periods of 3 or 7 days.
The AI-powered Math Solver is designed to instantly solve math equations, quizzes, and word problems, including those captured via photo. While specific accuracy metrics are not provided, the feature aims to provide quick solutions.