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Best Spectral Calculator Apps

210+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated June 2026

The best spectral calculator apps on iPhone average 4.5★ across 210+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Spectral Calculator

Calculator₊#1

Calculator₊ by Impala Studios B.V.

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

Calculator ∞ by Incpt.Mobis

The Best Scientific Calculator
Strong Contender
📚 Education
4.7(6.2K ratings)
$5.99In-App Purchases
Calculator ∞ screenshot 1
Calculator ∞ screenshot 2
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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.

Taculator 84 Graphing Calc#3

Taculator 84 Graphing Calc by Di Venisco UG (haftungsbeschrankt)

Statistics, Matrix + Graph
Worth Considering
📚 Education
4.5😐(7.5K ratings)
FreeIn-App Purchases
Taculator 84 Graphing Calc screenshot 1
Taculator 84 Graphing Calc screenshot 2
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Taculator 84 Graphing Calc screenshot 6

This advanced calculator app offers comprehensive tools for high school and college students, covering everything from pre-algebra to calculus and statistics. It features high-resolution graphing, matrix operations, and detailed statistical analysis, all accessible through an intuitive interface.

What We Love

  • 🚀 Excellent implementation and familiar layout
  • 💡 Customizable buttons and color scheme
  • 👍 Helpful and life-saving calculator
  • 🚀 Best on-the-go calculator

Room to Improve

  • 🐛 Crashes when trying to graph or use certain functions
  • 🔒 Requires subscription to access full functionality
  • 🐛 Inaccurate calculations and wrong results

More Spectral Calculator apps to explore

4
Calculator Pro Lite
Calculator Pro Lite
Calculator Pro Lite
Best Calculator
Free

A highly customizable calculator app offering a modern interface and extensive features. Personalize themes, button layouts, and visual elements. Track your calculations with a detailed history and access scientific functions.

Customizable themes and colorsDual-line displayCalculation history
🔧 Utilities
(3K)
ad-supported
5
Sci:Pro Calculator
Sci:Pro Calculator
Sci:Pro Calculator
by Jerry Montgomery
Free

This app offers a versatile calculator with three distinct modes: Basic, Scientific, and Programmer. It provides a history view, sharing capabilities, and supports various input and output formats. The app is designed for iPhone, iPad, and iPod Touch.

Multi-mode calculator (Basic, Scientific, Programmer)Calculation historyShare results via email
🔧 Utilities
(3.6K)
free
6
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
(357K)
free with in-app purchases
7
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
8
GraphNCalc83
GraphNCalc83
GraphNCalc83
Graphing calculator
$12.99

This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.

Touch-based graphing and editingNatural textbook notation inputAdvanced math and statistical functions
📚 Education
(3.8K)
paid
9
EduCalc Classic
EduCalc Classic
EduCalc Classic
by William Jockusch
Free

This app functions as a powerful graphing calculator with extensive scientific functions, unit conversion, and a built-in math and science reference. It supports graphing multiple equations, polar coordinates, and implicit functions, making it ideal for complex calculations and homework.

Scientific calculator with advanced functionsGraphing up to four equations simultaneouslyUnit converter for various physical quantities
📚 Education
(299)
free with in-app purchases
10
Gravel Calculator Plus
Gravel Calculator Plus
Gravel Calculator Plus
by Inch Calculator
Free

Easily estimate the quantity of various landscaping and hardscaping materials like gravel, stone, and sand. Get precise measurements in tons, cubic yards, or cubic meters for your projects.

Estimate gravel, stone, rock, sand, and topsoilCalculate material needed for landscapingCalculate material needed for hardscape projects
🔧 Utilities
(1.7K)
ad-supported
11
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
(52K)
free with in-app purchases
12
Photone - Grow Light Meter
Photone - Grow Light Meter
Photone - Grow Light Meter
Perfectly light your plants!
Free

This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.

Measure PAR, PPFD, DLI, lux, foot-candles, and kelvinResearch-grade accuracy using device cameraPre-calibrated for specific devices
🔧 Utilities
(4.9K)
free with in-app purchases
13
Class Calc Graphing Calculator
Class Calc Graphing Calculator
Class Calc Graphing Calculator
Statistics•Graphing•Matrix•Sci
Free

This app offers a comprehensive graphing and scientific calculator with advanced statistical functions. It includes a unique test-mode lockdown feature, allowing phone use during exams by temporarily disabling other apps. All features are free with no ads or upgrade requirements.

Scientific calculator functionsGraphing and statistics calculatorTest-mode lockdown
📚 Education
(1.6K)
free
14
Enphase Enlighten
Enphase Enlighten
Enphase Enlighten
by Enphase Energy, Inc.
Free

Monitor your solar energy system's performance with ease. Verify system health, view energy production by time period, and analyze performance against weather data. Generate reports on energy production and usage directly from the app.

Verify system healthView energy productionAnalyze against weather data
🔧 Utilities
(89K)
free
15
Symbolab Graphing Calculator
Symbolab Graphing Calculator
Symbolab Graphing Calculator
by Eqsquest Ltd
Free

This interactive calculator allows users to graph various mathematical functions, conics, and inequalities without charge. It provides instant insights into function properties like extreme points, intercepts, and asymptotes. For deeper analysis, it links to a solver that offers step-by-step evaluations, available via in-app purchase.

Graph multiple functionsShow function propertiesIdentify extreme points
📚 Education
(213)
free with in-app purchases
16
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
The Best Calculator - Calc Pro
10 Powerful Calculators
Free

This app offers a comprehensive suite of 10 powerful calculators and 10 financial worksheets, designed to handle everything from basic arithmetic to complex scientific and financial calculations. It includes features like unit conversion, currency exchange, graphing, and statistical analysis, making it a versatile tool for students and professionals.

10 powerful calculators (Standard, Scientific, Graphing, etc.)10 financial worksheets (Mortgage, Loan, Compound Interest, etc.)Unit Converter with 3000+ conversions
🔧 Utilities
(4.6K)
free with in-app purchases
17
Good Grapher - scientific graphing calculator
Good Grapher - scientific graphing calculator
Good Grapher - scientific graphing calculator
by Iurii Mozharovskyi
Free

This powerful scientific graphing calculator assists with calculations from school to professional work. It offers advanced scientific functions, 2D and 3D graphing capabilities, and a math solver for polynomials and systems of equations.

Scientific calculator with history2D and 3D graphingPolynomial and linear equation solver
📚 Education
(119)
free
18
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
19
PPI Calc - DPI Calculator
PPI Calc - DPI Calculator
PPI Calc - DPI Calculator
for displays with square pixel
Free
$0.99 | 100% OFF

Calculate your display's pixel density (PPI) using its dimensions and pixel count. Learn about PPI and DPI definitions, and how to categorize screen resolution.

Calculate PPI from dimensions and pixel countLearn PPI definitionUnderstand PPI vs DPI
🔧 Utilities
(37)
free
20
Vernier Spectral Analysis
Vernier Spectral Analysis
Vernier Spectral Analysis
by Vernier Software & Technology
Free

This free app enables students to perform spectral analysis in biology and chemistry labs. It facilitates data collection and analysis for topics like Beer's Law and enzyme kinetics. The user-friendly interface guides students through the process, offering features like curve fitting.

Full spectrum data collectionBeer's Law explorationEnzyme kinetics analysis
📚 Education
(66)
free

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