• Basic & Scientific
• Fraction & Currency converter
• History Tape: Save, Copy & Share calculations
• Drag and Drop
• Split View for multitasking support
• Choose your decimal notation
• Calculate with Degrees or Radians
• Set the number of decimals
• Edit Equation
• Memory Banks
• 70+ Amazing Themes
• Visually impressive & intuitive
• Full Apple Watch support

You can edit both digits and operators of the current equation.
You can place the edit cursor by tapping or using the arrows.

Perform calculations on fractions without converting them to floating point numbers. Floating point numbers that exceed the number of decimal digits are rounded or truncated, generating a relatively small inaccuracy. The solution is to use The Calculator with fractions capabilities.

Having a great result with your calculation or currency conversion? Save time and send it to your contacts fast & simple… by sharing with The Calculator!

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

As always, we appreciate your feedback.
Please keep sharing your experience to
Do you love our app? Please rate and review us in the App Store!


The Calculator (C) 2000 Impala Studios.

What's New

Version 6.0.6

• We update our app regularly to fix small bugs that you wouldn't necessarily notice

Ratings and Reviews

3.4 out of 5

33 Ratings

33 Ratings

iPhone X problems


I upgraded to the ad free version of this app. It looks great, and I would love it, except that there is a serious recurring problem I’m having due to the app’s design clashing with the new gesture based interface Apple introduced with the iPhone X. Very often, when I attempt to exit the app by swiping up on the bottom of the screen to return to the home screen, it results in an inadvertent press of either the decimal point or the “+\-“ button on the calculator. This is very annoying. I like the full screen design of the app, which takes advantage of the iPhone X’s screen nicely, and I believe all that needs to be done is an adjustment to make inadvertent key presses less likely when a user swipes up from the bottom of the screen. Please fix ASAP. I want to keep this app. Thank you.

Developer Response

Thank you for contacting us regarding this issue, and our apologies for the inconvenience. We were not aware of this issue yet, and will investigate it further immediately. Please keep in mind that this might take some time, but we do want to have it fixed as soon as possible. If you could send us any useful information or screenshots about the problem then that would be very helpful, and this can be sent to

Again, our apologies for the inconvenience.

Circle buttons


(iPhone X)

When I go to edit the appearance of the app, the themes containing circle buttons don’t render circles. It’s almost like this app was designed as a free model (with banner ad in place) and copied over to the paid model. And since the banner is now missing, everything else just gets stretched down.

I’d suggest putting an empty space at the bottom of the screen and make the buttons actual circles. I actually prefer the eye sore of a banner ad over these slightly elongated circles.

Also, the “copy the equation” feature copies the equation to my clipboard but doesn’t allow me to paste it in the calculator window. The “drag and drop” feature also doesn’t work.

The free version of this app is better than the paid one.

One last thing, editing the themes is slightly different in this version over the paid one as well. It seems the screen to choose your button shape is missing.

Developer Response

Thank you for contacting us regarding this issue, and our apologies for the caused inconvenience. Fortunately, we recently released an update that should have fixed this issue. I would therefore advise you to update your app through the App Store and see if that fixes the problem.

If after the update the issue still persists, please do not hesitate to contact us at Again, our apologies for the inconvenience.

Older paid version included currency converter too

pro user 87

I have been using the paid version of this app since 2012. I loved it when they added a new feature with currency conversion about 2 years ago .Today my app auto updates and suddenly the currency conversion feature is a subscription. My pro version had scientific, basic and currency conversion all included. Now I have to pay a fee for the same feature I have been using all along.

Developer Response

Thank you for reaching out to us with your feedback and our apologies for the caused inconvenience. The last update should have all the functions back in the app (for free of course).

Again our apologies for the inconvenience.


Impala Studios B.V.
120.3 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Danish, Dutch, Finnish, French, German, Greek, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Norwegian Nynorsk, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Vietnamese
Age Rating
Rated 4+
© International Travel Weather Calculator


  • Family Sharing

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

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