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Best R3Mcalc Apps

206+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated June 2026

Out of 206+ r3mcalc apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top R3Mcalc Apps (June 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1R3MCalcR3MCalcFree——NoMay 2026
2Calculator₊Calculator₊Free4.7★ (1.7M)YesYesJul 2026
3Basic Calculator+Basic Calculator+Free4.9★ (243K)YesNoJul 2026
4Calculator for iPad₊Calculator for iPad₊Free4.5★ (126K)YesYesJul 2026
5Desmos Scientific CalculatorDesmos Scientific CalculatorFree4.3★ (327)NoNoJul 2026
6Calculator⁼Calculator⁼Free4.6★ (357K)YesYesJul 2026
7Loan Calculator‰Loan Calculator‰Free4.9★ (96K)YesNoJul 2026
8Calculator HD Pro LiteCalculator HD Pro LiteFree4.6★ (51K)YesNoJul 2026

Top Picks for R3Mcalc

Calculator₊#2

Calculator₊ by Impala Studios B.V.

Basic, Scientific, Plus Calc
Strong Contender
🔧 Utilities
4.7😞(1.7M ratings)
FreeAdsIn-App Purchases
#91in Utilities
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
Basic Calculator+#3

Basic Calculator+ by Best Free Apps

Basic Four Function Calculator
Worth Considering
🔧 Utilities
4.9😊(243K ratings)
FreeAds
Basic Calculator+ screenshot 1
Basic Calculator+ screenshot 2

Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

What We Love

  • 👍 Easy to use
  • 👍 Large, clear buttons
  • 👍 Straightforward, basic functionality
  • 👍 No ads or in-app purchases

Room to Improve

  • 🐛 Inconsistent click volume
  • 🐛 Ads can be intrusive or disruptive
  • 🐛 Missing backspace/delete function

More R3Mcalc apps to explore

4
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
5
Desmos Scientific Calculator
Desmos Scientific Calculator
Desmos Scientific Calculator
by Desmos, Inc.
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
(327)
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
Loan Calculator‰
Loan Calculator‰
Loan Calculator‰
Simple Loan Calculator
Free

Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.

Loan calculationMortgage calculationAmount input
💰 Finance
(96K)
ad-supported
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 3.0
Calculator 3.0
Calculator 3.0
Calculations Simplified
Free

A free, redesigned calculator app offering a simpler, more intuitive experience across Apple devices. Features include customizable themes, advanced scientific functions, and unit conversion, all optimized for various screen sizes and interactions.

Customizable themesScientific calculatorUnit converter
🔧 Utilities
(3.5K)
free
10
Calcbot 2
Calcbot 2
Calcbot 2
Calculator and Unit Converter
Free

This app offers a smart calculator with a history tape and expression view to track your calculations. It includes over 500 unit conversions and scientific functions, with an Apple Watch extension for on-the-go use.

History tape for saved calculationsExpression view for typed inputOver 500 unit conversions
🔧 Utilities
(11K)
free with in-app purchases
11
Currency converter calculator!
Currency converter calculator!
Currency converter calculator!
Exchange rates USD
Free

This app provides real-time exchange rates for all world currencies, including cryptocurrencies, and functions offline. It features an embedded calculator, the ability to set custom rates, and updates hourly. An optional premium version removes ads and offers additional features.

All world currenciesOffline functionalityCryptocurrency support
✈️ Travel
(69K)
free with in-app purchases
12
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Graphing Calculator Plus AI
Scientific Graphing Calculator
$5.99

This app serves as a powerful scientific graphing calculator, offering advanced mathematical functions and graphing capabilities. It includes a built-in AI assistant for math queries and a comprehensive user manual. Ideal for students and professionals needing complex calculations and visualizations.

Scientific and graphing calculatorAI-powered math assistantComplex number calculations
📚 Education
(12K)
free with in-app purchases
13
CALC Smart Calculator ±
CALC Smart Calculator ±
CALC Smart Calculator ±
Basic « Scientific » Advanced
Free
$5.99 | 100% OFF

This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.

Real-time resultsUnit and currency conversionsCustom functions and constants
🔧 Utilities
(2.4K)
free with in-app purchases
14
MathMaster: Math Solver & Help
MathMaster: Math Solver & Help
MathMaster: Math Solver & Help
Homework Helper & AI Tutor
Free

Solve math problems instantly by taking a photo or entering an equation. Get step-by-step solutions to understand the process and improve your math skills. Covers a wide range of topics from basic arithmetic to calculus.

Camera-based problem solvingStep-by-step solutionsHandwritten and printed math recognition
📚 Education
(12K)
free with in-app purchases
15
Color Calculator-smart&cute
Color Calculator-smart&cute
Color Calculator-smart&cute
Cute calculator app with theme
Free

This app offers a customizable and fast calculator experience with a wide variety of themes. It includes scientific and standard modes, real-time results, and calculation history. Personalize your math with over 60 cute and colorful themes, including animated options.

60+ free cute and colorful themesExclusive dynamic and special themesScientific & Standard calculator modes
🔧 Utilities
(15K)
freemium
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
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

Ad-free experienceCalculation historyVisual input
💰 Finance
(23K)
free with in-app purchases
18
Financial Calculator: Percent
Financial Calculator: Percent
Financial Calculator: Percent
Tax Percentage, Profit Margin
Free

This app offers a comprehensive suite of over 40 financial and utility calculators. Easily handle complex calculations like investment analysis, tax percentages, profit margins, and everyday percentage needs with a clean and intuitive interface.

Over 40 built-in calculatorsFinancial calculators (ROI, IRR, NPV)Tax and profit margin calculations
💰 Finance
(14K)
subscription
19
Grades - Grade Calculator, GPA
Grades - Grade Calculator, GPA
Grades - Grade Calculator, GPA
Grade Calculator & GPA Tracker
Free

Calculate the exact scores needed on future assignments to achieve desired grades and overall GPA. Customize your experience with icons and colors, and manage assignments with flexible grading options.

Grade CalculatorGPA CalculatorCustom icons and colors
📊 Productivity
(13K)
free with in-app purchases
20
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Math AI Homework Helper,Solver
Algebra calculator free of ads
Free

This app provides instant, step-by-step solutions for a wide range of math problems, from basic arithmetic to calculus. Users can scan math problems with their camera and receive detailed explanations, multiple solving methods, and graphing tools. It's designed to help students understand and solve challenging math questions quickly.

Scan math problems with cameraStep-by-step explanationsGraphing calculator
📚 Education
(30K)
free with in-app purchases

FAQ about R3Mcalc

Are there free r3mcalc apps for iPhone?
Yes — 19 of the top r3mcalc apps we rank are free to download, including R3MCalc and Calculator₊.
R3MCalc has no in-app purchases, according to its App Store listing as of June 2026.
We track 206+ r3mcalc apps on the iOS App Store as of June 2026, ranked by rating, recency, and analysis of real user reviews.