CALC Smart 4+

Calculate and Convert


Designed for iPad

    • 4.6 • 194 Ratings
    • $0.99


Calculate as you type, swipe to Convert, Functions, auto Fractions & Parentheses, History, Tape-roll, custom Layouts n'more

CALC has a smarter way about your daily math + is always on the latest iOS & empowered by user ideas... Fav. fan quote? "Functionality & Beauty can co-exist"

* FEATURED by Apple in Utilities + in Calculate & Convert
* VERIFIED by 7.7k global Reviews & over 100M sessions
* LOVED for its Efficient UI with Live results & Natural feel
* CERTIFIED by Teachers on the Educational App Store

Latest iOS & watchOS ready:
- iPAD multitasking, 3D Touch shortcuts
- Spotlight searching of History log
- Expandable Calculator Widget w/ History
- Apple watch native App with haptic
- Complications

CALCs Top 10 Smart, Unique Features:
① Results as you type, even with open parentheses
② Sharable History & Tape-Roll sums in Landscape
③ Widget designed for space & time
④ Fast conversions with just a swipe (or tap)
⑤ Live currencies with flags & a Custom unit option
⑥ Quick gratuity calculator with approximations
⑦ Decimals showing Fractions with 1/999 precision
⑧ Unlimited user-definable Functions and Constants
⑨ Share expressions with a simple link tap
⑩ On-screen Timer tracks remaining mins:secs

Plus one more thing... a special Theme Customization Interface and a set of layout Options allow you to sync your eyes, fingers and mind into one seamless experience!

CALC is really clever.
CALC does live math expressions: From simplifying even the simplest like "1+ -2", that you can type the same way you'd on a paper (without the need for "negating" a number afterwards) ... to more advanced expressions like "1/3 + -( 3 x 9(log(4;8) + sind(90)))" where you can even specify a base for the log() function, use natural input without the need to insert a multiplication symbol or worry if you did the trig. function "sinus" in RAD or DEG, or closed all parentheses.

Advanced calculator.
By swiping left and right on CALC, you can easily access over 60 advanced math functions, constants and symbols + create limitless number of your own!

History log.
CALC remembers what you have calculated. Swipe up, and you can see all your previous calculations and perform aggregate functions.

Built in converter.
Convert your results in 21 common categories, including currency and one extra custom category where you can define your own units and conversions.

Colorful Themes.
Limitless lovely themes for you to browse, including optional parallax background image of your choice!

Easy access.
Tap & Hold a math expression to edit it. Shake your device to undo
Tap & Hold a number key for smart parenthesis
Tap & Hold the decimal point for RANDOM decimal
Tap & Hold the “ans” key for answer history or M+/- feature
Tap & Hold the “÷” key for 1/x
Tap & Hold the “-” key to negate
Text style Edit option for Expressions
Tapping sound options

... and plenty more: i.e. custom keyboard for your iOS or numerous font choices for your eyes!

We do frequent updates. If you feel something's missing or needs an adjustment, just ask:

Tip: Make your own unique CALC background and download your piece of the universe @

CALC is POWERED by UserVoice:

* Enterprise enabled (EMM) with MDM & AppConfig

What’s New

Version 3.5.45

Fix for imaginary square roots.

Ratings and Reviews

4.6 out of 5
194 Ratings

194 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.

J.Le111 ,

The only Calculator I’ll use

Have been using this calc for years and the only one for many reasons.
Most calculators don’t give me the option to see what I’m actually pressing. I like to see my numbers and not just the total.
Plus, I love the interface. Stunning and easy to use!

SuperShoeDiva ,

Ugh I just want to do math

I have used this calculator for a number of years. However the most recent update throws up a dialogue that I’m supposed to swipe down to close but it doesn’t close and now I can’t do any kind of math to save my life!

I received a dev response email today. I can’t tell who is being lame here. iIs it Apple because I only received the email about the developer response today, Oct. 2018? Or is it the developer because they somehow backdated their response, which is dated the day after I posted this review. I suspect it’s both! And restarting the app I didn’t help! You had a bad update own it!

Developer Response ,

Unfortunately when/how the AppStore review responses get to the end users is outside of our control. We’d like to help but without additional information that is very difficult esp. since yours is the only issue instance we know of. Please contact us via UserVoice in the app itself or via the support link on AppStore CALC app listing and include your device info and ideally a screenshot. Thank you for taking the time to help us resolve the issue to your satisfaction.

Original response: Please close and restart the app and/or use one of the support channels to submit a screen shot and your device details so we can identify the issue. Thank you for using CALC! :-)

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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