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The Calculator Free

By International Travel Weather Calculator

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The Calculator Free combines the Standard and Scientific calculator for Free!
Join millions of users by downloading The Calculator Free on your iPhone, iPad or Apple Watch.

* History Tape: all Calculations are Saved and can be Copied and Forwarded; hide and open with one simple click
* Quick Equation Preview: Your current Equation is displayed below the Result
* Basic Calculation Buttons in Portrait view
* Advanced Mathematical/Scientific Buttons in Landscape view
* Calculate with Degrees or Radials
* Percent Button will behave just like the Original Calculator
* Memory Buttons like the Original Calculator
* Invisible Backspace Button: Slide/Swipe the Result Screen with your finger or use the visible Back Button
* Split View Support
* Full watchOS 2 support
* A Convenient built-in Currency Converter
* 50+ beautiful themes available for download, unlock them for free by watching an ad!

The Calculator Free offers two standard designs, you may personalize your Calculator with additional themes (50+) available for download with an In-App Upgrade.

The impressive list of mathematical operations you can perform with The Calculator Free includes: Addition, Subtraction, Division, Multiplication, Percentages, Cubic Exponent, Cubic Root, Engineering Exponent, Nth Exponent, Nth Root, Power of E, Power of Ten, Power of Two, Square, Square Root, Natural Logarithm, Common Logarithm, Binary Logarithm, Sinus, Cosinus, Tangus, Hyperbolic Sinus, Hyperbolic Cosinus, Hyperbolic Tangus, Arc Sinus, Arc Cosinus, Arc Tangus, Hyperbolic Arc Sinus, Hyperbolic Arc Cosinus, Hyperbolic Arc Tangus, Multiplicative Inverse, Random Number Input and Factorial.

The Calculator Free is the best and most feature-rich Calculator for all iOS Devices, and has been downloaded by millions of users worldwide. Download the app now, and join the scores of users impressed by The Calculator Free’s ease of use and extensive functionality options!

What's New in Version 4.0.0

The #1 Calculator on App Stores World Wide!
- NEW: the currency converter!
- UI tweaks
- performance improvements
- ad-free version won't get ads through push notifications anymore


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Apple Watch

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Customer Reviews

Really really big. Who cares?

I never use this calculator because I just want to add or subtract, multiply or divide. I just now read a couple of reviews and discovered that the complicated, far more complex capabilities disappear if the iPad is held in portrait view. So I, apparently am unique in only using calculators for simple arithmetic and hates all the extra crap, oops, complexity. Of course, I never use all the crap so I don't know how to use a calculator that appears to only be that. Golly gee wiz. If there were instructions, I wouldn't be hating this calculator so intensely! But that would spoil everything? Maybe I'll remember to put the iPad in portrait view instead of just using my iPhone. There have to be others who use calculators for arithmetic, so one sentence would spare us all from avoiding this one? Just a thought.


Mainly putting this up so that the app stops pestering me for a review, so make of that what you will.

It's what you'd expect; a decent calculator. The ads in the free version aren't too intrusive, at least for me. I do occasionally misclick on the ads and have to close Safari out, but there's nothing as irritating as showing a 30 second video every time you start up, so no need to worry about that.

For those who like to travel, you might get some use out of the currency converter that was recently added.


This calculator is the best calculator around... Much better than the apple one. It can convert currency, you can see your past calculations, it has most buttons you need (square roots, etc. ), it has cute themes, and so much more. I definitely recommend this to any student because it has most everything you need, and everything you didn't know u need!

The Calculator Free
View In iTunes
This app is designed for both iPhone and iPad
Offers Apple Watch App for iPhone
  • Free
  • Category: Utilities
  • Updated:
  • Version: 4.0.0
  • Size: 48.0 MB
  • Apple Watch: Yes
  • Languages: English, French, German, Greek, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish
  • Seller:

Compatibility: Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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Top In-App Purchases

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  6. Summer Pack$0.99