Calculator +

Calculator +

Graphing, Percentage, Triangle

10K ratings
938 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • February 5, 2010
  • May 4, 2026

Features

Calculator + video #1 for iPhone
Calculator + screenshot #2 for iPhone
iphone
ipad
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About

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 calculator
Intuitive interface with equation and result display
Fraction and percent support
Advanced editing capabilities
Polynomial and linear equation solver
Graphing calculator
Unit conversion and geometric calculators
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What users say

See all reviews

What's New in Calculator +

2.9.30

May 4, 2026

Fast math at your fingertips. Just like the problems you're solving, Calculator+ keeps evolving with minor bug fixes and performance improvements to ensure your scientific, fraction, and graphing calculations stay sharp.

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Subscription plans

Scientific Calculator

Premium features and no ads for 1 month!

$4.991 Month
3 Days trial
How to cancel Calculator + subscription ⁉️
10

In-App Purchases

$2.99

Linear Calculator

Solve System of linear equations

Events

Read more about Intuitive Math Made Easy

Intuitive Math Made Easy

Tired of clunky calculators? try Calculator Plus!

Mar 1, 2024 Apr 1, 2024

User reviews

Calculator

Works well and retains memory when app is closed

Waste of money

Stopped working completely but even before that, features were not working properly

Works great!

Works like a calculator should. I’ve not encountered any issues with it.

Used for many Years

Legit the best free calculator I’ve ever used, it has better options than the apple calculator tbh

5stars!!

Like all things of the app!?!????

Developer apps

User experience

🐞

Reported Bugs

5 issues

Fraction calculator has TWO subtraction buttons and NO division button

Bug

Decimals seem to be changed to fraction with no apparent way of changing it back

Bug

Functionality is dropped by forcing you to the main menu every time you open it

Bug

Currency converter broken

Bug

Login screen freezes

Bug

Requested Features

5 requests

Add mod function

Feature

Add commas

Feature

Add 1/x function

Feature

Support for Retina Display

Feature

Add number 4 with two lines

Feature

FAQ

What does the free version of this calculator app offer?

The free version provides a fully functional basic and scientific calculator. It features an elegant and intuitive interface that displays both the equation and the result simultaneously. It also supports calculations involving fractions and percentages, along with many standard scientific functions.

What advanced features can I unlock through upgrades?

Upgrades unlock specialized calculators for advanced users. These include a fraction calculator with unit support (feet, inches, cm), a polynomial solver for quadratic and cubic equations, a linear equations solver, a graphing calculator to find min/max and intersection points, and calculators for various geometric shapes like triangles and cones. A base converter is also available.

How much does this app cost?

The app offers a free basic and scientific calculator. Additional advanced features and specialized calculators are available through in-app purchases, allowing users to upgrade to specific functionalities they need.

What devices is this calculator app compatible with?

This application is designed for both iPad and iPhone devices. It leverages the capabilities of these Apple platforms to provide a seamless and beautiful user experience.

What are some common use cases for this app?

This app is useful for a wide range of users, from students performing homework to professionals tackling complex calculations. It's ideal for solving algebraic equations, graphing functions, performing unit conversions, and handling intricate mathematical problems that go beyond a standard calculator.