Calculator ‪×‬ 4+

Let's reinvent the calculator

DOUBLE U s.r.o.

Designed for iPad

    • 4.5 • 134 Ratings
    • Free
    • Offers In-App Purchases



Calculator made from the ground up especially for today's touch screen devices.

• stores and allows reuse of previous calculations
• share results conveniently
• formula evaluation - enter whole formula in one line
• supports iPad multitasking (Slide Over and Split View)
• small download size
• fast startup

users love it:

"Easiest calculator I’ve ever used. No directions needed. Easy to use"

"This is a great calculator app with a log of all your calculations that you can reference & reuse."

What’s New

Version 1.16

• general improvements and bug fixes

Thank you for all your feedback, reviews and support!
If something does not work, please let us know via the menu within the app.

Ratings and Reviews

4.5 out of 5
134 Ratings

134 Ratings

Dermit Dad ,

Your math is off

267.46+176.97 = 444.4299999999

And where is the +/- button?
Could you please add a unit conversion calculator as well?

blanktimes ,

The calculator I was looking for.

This is the calculator I was looking for. I recently subscribed to the ‘removed ads’ version because this is the one calculator app that had the features I was looking for. For example, I can easily see the last inputs because there is a history panel which you can scroll up and down with the swipe of a finger. I also enjoy the ‘last’ button feature that allows me to do calculations in where I can use my previous calculated sum—multiply/subtract/etc it by an even prior sum, easily accessible via the history feed. Thanks.

LilacDoe ,

Solid Basic Calculator

This let’s you fully type out multi-expression math problems. It can’t do anything too fancy, it’s just a solid replacement for the basic calculator.

Also, if you close the app, the previous expressions stay in your history (I’m not sure about restarting the phone though).

App Privacy

The developer, DOUBLE U s.r.o., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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