*** Featured by Engadget in “iPad Apps: Utilities You Need” ***

Calculator Max makes both simple and complex calculations easy. It offers all calculators you’ll ever need in one carefully designed, uncluttered and easy-to-use package.

Switching between calculators is buttery-smooth and natural. The basic calculator with big buttons swiftly handles everyday tasks. The more advanced scientific calculator is loaded with all important mathematical functions and constants.

A history tape with your entries is comfortably accessible in all calculator modes. Thanks to it, you never lose track of what you’ve entered and the entries can be reused effortlessly in your calculations. The tape can also be exported to common formats and shared or printed.



— Basic calculator with big buttons
— Scientific calculator packed with functions and constants
— History tape with the calculations at your fingertips in all modes
— Extensive rounding options (e.g. two decimal places for accounting)
— Up to 5 memory slots for frequent numbers
— Plain Text, Monospaced Text, CSV, PDF and image export formats
— Advanced export, share and print options


— Side tape layouts for easier long records handling
— Clean and uncluttered interface with refined haptic feedback
— Multitasking support on iPad for side-by-side work
— External keyboard support for even faster input and app control
— Smooth run on all devices with iOS 12 and newer


— Handcrafted design themes with dark mode support
— Loads of app icons you can easily choose from the best one for your Homescreen
— Carefully selected sound sets

What’s New

Version 4.2

— Fully flexible calculator layout on iPad
— Side tape layouts for easier long records handling
— Side tape on iPhone in landscape mode
— Light and dark mode can be set independently on system settings
— Stability a performance improvements

Ratings and Reviews

4.0 out of 5
1.1K Ratings

1.1K Ratings

Le Renard Savant ,

Great Multi-function Calculator

This is more than just your standard calculator. There are 4 modes to choose from. The one I find most useful is the Tape Mode. It is great for itemized calculations.

There are just a couple of small issues that prevent me from giving it a perfect 5-star rating. The first is that while having a Scientific Mode is great, having a Scientific Mode with a graphing screen would have made any other calculator app obsolete. Secondly, there is no backspace key. This would make it so much easier to fix the most common typos. Instead, you must clear and re-enter the entry altogether. Not a huge problem, but just a bit inconvenient.

LagoonSurfer ,

Was A great Tape Calculator

Prior to the update this was just the best classic tape calc. It was straightforward and worked really well. The update is buggy to say the least. The last several times I tried the basic now-handicapped version (keep in mind I had previously paid for the app) — which the update converted my paid version to — it was completely non-functional. By that I mean it would not function as a calculator. I emailed the developer and they did not respond. I was just looking for instructions on how to make the now-hobbled app I had always used just be a calculator.

This brings me to the next concern. If the update was going to turn my paid-for app into a nothing-app there should have been some warning. This was underhanded I feel. I don’t mind paying a developer for their hard work. But don’t steel my previous purchase. Let me know what you are doing and I will decide. I have since found a replacement tape calc app (10 Key Universal Calc) and was happy to pay 3 times the cost of the ‘key’ to make CrowdCafe’s app a calculator again. (Still only talking $6).

GunSlingerTX ,

Terrible Update

Hate the change to the interface. Lost all the original functionality that I paid for (tape, interface choice, export, printing) etc. Expect me to pay for it again? Don’t think so.
Can some one please tell me how I can restore the old version?

I received a response from the developer explaining that all the functionality of the prior version was still there. Functionality, maybe but usability, no. Here is my reply to the developers

I used your calculator app on my iPad for many years. I liked it very much. The interface was clean and professional. I liked the “tape” function.
The latest update completely changed the interface. It is now one big blob of white where you can barely tell the buttons apart. The tape is no longer conveniently beside the calculator. It must be accessed separately.
I understand that the colors can be changed with the in app purchase. That’s not the point. The new interface and way the calculator/tape work is a step backwards. For me the calculator is now clunky , awkward and difficult to use.
For me it’s so bad that I had to delete the update and restore the old version.
Consider going back to what worked because for me this doesn’t, and I’m certainly not going to purchase the premium features since the basics are unusable for me.

Developer Response ,

It is needed to say that in-app purchase offers only new, premium functionality. The all previous functionality remains as free update. All Settings are available when you pull the calculator display down and reveal Clear, Settings and Export buttons.

App Privacy

The developer, CrowdCafé, 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

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

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