CALC Smart Calculator ‪±‬ 4+

Basic « Scientific » Advanced


    • 5.0 • 3 Ratings
    • $2.99


Calculate as you type, swipe for history or instant conversions, rich functions, tape-roll, customizable layouts & themes, auto fractions & parentheses 'n more!

Why Choose CALC Smart? Have you seen our latest reviews? Case closed!
► Used by Scientists, Professionals and Students alike
► Apple-Featured: Spotlighted in Utilities and Calculate & Convert.
► User-Loved: Over 7.7k global reviews and 100M+ sessions validate its efficiency.
► Educator-Certified: Praised by teachers on the Educational App Store for its intuitive UI.

Ready for the Latest iOS & watchOS
* Multitask on your iPad and use 3D Touch shortcuts.
* Search your calculation history with Spotlight.
* Widget with history integration.
* Apple Watch support, complete with haptic feedback and complications.

Top 10 Unique Features
① Real-time results, even with incomplete parentheses.
② Landscape mode for shareable history and tape-roll.
③ Optimized widget to save space and time.
④ Fast unit and currency conversions—a swipe away.
⑤ Quick gratuity calculator with rounding options.
⑥ Display decimals as fractions with 1/999 precision.
⑦ Create unlimited custom functions and constants.
⑧ Easy expression sharing via link.
⑨ Built-in timer.
⑩ Customizable themes and layouts.

Why Users Love CALC
* Live Math: Natural input, even for complex calculations.
* Swipe Functions: Over 60 advanced math functions just a swipe away.
* History: Never lose track of your calculations.
* Conversion: 21 categories, plus custom options.

Additional Features
* Edit on the Fly: Long-press to modify expressions and numbers.
* Audio Feedback: Customize tapping sounds.
* Styling: Multiple font choices.
* Enterprise-Ready: EMM support with MDM & AppConfig.

We Listen
* Frequent updates based on your feedback. Got a suggestion? Visit our UserVoice page:

Custom Background Tip
* Design your own CALC background with images from NASA’s multimedia library:

What’s New

Version 3.5.59

Just a few minor Bug fixes

Ratings and Reviews

5.0 out of 5
3 Ratings

3 Ratings

CWils2811 ,

So close...

I searched and searched for a decent calculator for my Apple Watch. After deliberating the cost, I finally went for this one. It has the features I need/want, and works pretty well. I like the haptics feedback when typing. For some reason, I couldn’t add the complication to my watch face from the phone app, so I had to do it on my watch. It took me a bit of time to figure out how this app works, but I think it’ll be easy and fast to use with time/practice.

JayarOH ,

Amazing function

I do not use any other calculator…on my phone or off. This is simply the best. It does way more than what I need for my modest math requirements, but it also is perfect for what I need. Especially love the ability to erase parts of equations if I make a mistake and the conversions capability is superb, too. I’ve used this app for years and will not switch.

Lindseygrimey ,

Love it!

As someone who is bad at math, I rely on a calculator for the simplest equations. I love this app because I can see what I’ve typed in written out as I go, so in case I make a mistake I can go back and fix it.. I always use it instead of the calculator that comes with my iPhone.. it’s perfect for my iPad too!

App Privacy

The developer, QApps LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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