Calculator combines the Standard & Scientific calculator, with extensive & easy functionality options. Use the new Retro Theme now and go back to vintage in time ; )

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

• Basic & Scientific Calculations
• History Tape: Copy & Share
• Edit Equation
• Calculate with Degrees or Radians
• Memory
• Retro Theme
• Choose your Decimal Notation
• Set the Number of Decimals
• Dark Mode
• Support for iPad Split View

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

Addition, Subtraction, Division, Multiplication, Percentages
Square, Cubic Exponent, Nth Exponent
Square Root, Cubic Root, Nth Root
Engineering Exponent, Factorial
Power of Two, Power of Ten, Power of E
Natural Logarithm, Common Logarithm, Binary Logarithm
Sine, Cosine, Tangent
Arc Sine, Arc Cosine, Arc Tangent
Hyperbolic Sine, Hyperbolic Cosine, Hyperbolic Tangent
Hyperbolic Arc Sine, Hyperbolic Arc Cosine, Hyperbolic Arc Tangent
Multiplicative Inverse, Random Number Input

Terms & Conditions: Privacy Policy:

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 Calculator -

What’s New

Version 3.5.4

Small but important improvements in this update!
What's changed? Performance improvements and small bug fixes aimed to enhance your experience.

Ratings and Reviews

4.7 out of 5
243.2K Ratings

243.2K Ratings

Connie Lei :) ,


I'm now in the fourth grade and math is pretty tough now. With this, it is so much easier to use than REAL calculators. This is the most USEFUL app that I actually have on my iPad 😂🤣
But seriously though.....My AM class teacher ( morning class ) gets mad when the class or a student either gets confused with math, makes a mistake, or doesn't understand. Ok FIRST of all you need to understand that we are just a bunch of 9,10 or even 11 year olds are just kids and we need a few steps to getting to know a strategy. This is friggen a-maz-ING!!!!!,

Edit, January 20, 2020:
Hey um.. This is sixth grade me checking in. I deleted the app for a while to clear up space but I re-downloaded it recently, I didn’t remember getting the app when I was like 10 haha! My opinion hasn’t changed one bit, still easier to use than the school calculators. And past me, multiplying decimals or whatever isn’t difficult XD But hey, I hate math easy or not so it doesn’t matter.

BJonesSLP ,

Functional, but...

A huge improvement over the stock calculator, but, as other reviewers have noted, the ad coverage is annoying. I could deal with the ever-present banner at the bottom, but the full-screen pop-up that just recently started completely disables the app, and the tiny kill-switch “x” in the corner is—by design, of course—virtually impossible to engage, frequently making it necessary to exit the app and restart in order to restore function. I’d happily pay a one-time fee to get rid of the ads, but the option isn’t available. Although I do like the app, the advertising interference has me looking for an alternative.

Developer Response ,

Thank you for your feedback. We always appreciate to hear from our users, and do our best to use this to improve our free apps. We have already reduced the advertisements in our apps as a result of this. We will continue to monitor the reactions of our users to better balance the ads, so we can offer the best experience possible. We will take your feedback into account for this as well, and are available for more feedback and suggestions at

If you would like to remove the ads then you can do so by purchasing the Pro version of the app. This can be found in the App Store by searching for ‘Calculator HD Pro’ and has the same functionality but without the ads.

FarmGirlG ,

Finally a calculator that shows the history

Now I don’t need to purchase and adding machine. I’ve been planning on buying one for a while because I really want to see the history of my entries, but this is even better; no need to print it out and buy/waste paper adding machine tape. No need to even buy an adding machine. I know that there are other calculator apps which show the history in some inconspicuous location if you know the secret password and cross your eyes just so, but this one is so much more convenient. The history is up front and center without having to say the magic word. Well done!


Impala Studios B.V.
135.1 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
In-App Purchases
  1. Retro Theme Calculator' $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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