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

4.4 out of 5
102 Ratings

102 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).


DOUBLE U s.r.o.
49.5 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.


English, Czech, German, Slovak

Age Rating
In-App Purchases
  1. Remove ads $1.99
  2. Remove ads $3.99
  3. Remove ads $9.99


  • Family Sharing

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

More By This Developer

You May Also Like