Calculator HD is Fast, Accurate and Beautiful, it's everything you need right in the palm of your hand. Start Calculating Now!

• Basic Calculation Buttons
• Edit Equation
• Mathematical / Scientific Buttons - hidden in iPhone portrait view
• Calculate with Degrees or Radians
• Percent Button
• Memory Button
• History View: Save, Copy & Forward
• Backspace Button - Slide/Swipe the Result Screen or use the Back Button
• Quick Equation View
• Split View
• Hand off support (continue calculation on other devices via spotlight or app manager)

You can edit both digits and operators of the current equation.

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
Sine, Cosine, Tan
Arc Sine, Arc Cosine, Arc Tan
Hyperbolic Sine, Hyperbolic Cosine, Hyperbolic Tan
Hyperbolic Arc Sine, Hyperbolic Arc Cosine, Hyperbolic Arc Tan
Multiplicative Inverse, Random Number Input, Factorial

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As always, we appreciate your feedback.
Please email us at with any suggestions or questions.
If you are happy with this update, please let us know by rating and reviewing us in the App Store!

-- COUNT ON --

What’s New

Version 3.3.4

• This version contains minor bug fixes

Ratings and Reviews

4.7 out of 5
1.4K Ratings

1.4K Ratings

Eccles CB ,

Ideal for iPad

This Calculator App is similar to the one that is part of iOS 10 on iPhone and iPod but not iPad for some bizarre reason. v 3.2.0 has moved right away from the iOS design to a more attractive one, so I can no longer look for the same icon on either device, but the works are as good as ever.
It has everything you need, from simple calculator with memory to full scientific. Both are visible in landscape but in portrait mode you swipe from one to the other. The latest version offers easier access to the History tape. Tiny gripe - the % key should be in the simple section not the scientific. Otherwise this is just great

KJKuk ,

Very helpful developers!

Much more than a basic calculator, and the developers have been kind enough to point out to me, by email, that it does have a % key, but I just couldn't see it! Really helpful, so I've changed my review to 5*.

Might be worth thinking harder about who users might be though. All I wanted when I bought this was "ad-free sums", and a simple mode for basic users like me could be a good idea. What % of the public can use a scientific calculator and haven't got one, I wonder?

Developer Response ,

Thank you for contacting us with your feedback. The % button is available, but it's just not on the main screen right now. If you hold your device in landscape mode, or swipe right, it will show you the scientific buttons as well, which includes the % button. We are working on a design to include this on the main screen though, which should hopefully be available soon.

technogeoff ,

Excellent Scientific Calculator

Does everything you expect of a standard scientific calculator, plus calculation history, plus it has never crashed on me yet. Would recommend it to anyone over the default Apple app for the history function alone and it looks a lot better.


Impala Studios B.V.
73.7 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, Dutch, French, German, Greek, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese

Age Rating
Rated 4+
© Impala Studios


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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