* Over 170,000 Downloads Worldwide

This is a totally easy-to-use calculator. It has all the basic features you'd expect from a calculator, as well as additional useful functions like the ability to calculate sales tax and discounts.

* History Tape - Reuse answer with a single tap
* Equation
* Sales Tax Calculations - Multiple tax settings with swipe change
* Discount Calculations with percentage operator (e.g., 100 - 30% = 70)
* Precise Rounding Settings
* Multiple Color Themes
* Multiple Font Sizes and Type Faces
* Left and Right Arrow Cursor Key - easy-to-edit expression
* Share Expression and Answer with other apps
* Support iPad
* Support Slide Over and Split View in iPad (If available)
* Sound Effects

We welcome your feedback.

URL Scheme

This is the paid version of the app. A free version is also available.
Paid version doesn't show ad and has four tax keys. (Free version has two tax keys)

What’s New

Version 6.4.1

Thank you for using R&Q Calculator.
- Fixed an issue where the layout would collapse when Split View and Slide Over on iPad
- Fixed to calculate only with computable strings
- Other minor improvements
we appreciate for your feedback.

Ratings and Reviews

4.9 out of 5
103 Ratings

103 Ratings

MooresvilleMan ,

Great Calculator

Especially great on an iPad. Sure, it does all the math stuff.
However, the tally tape is great for project work and research and the ability to export to other apps makes a goto app when it comes time to crunch numbers.

BrittanyMayBee ,

Best calculator (period)

This thing is a lifesaver for someone who forgets numbers as soon as you hit clear. I love the running tape and that you can add straight from the tape. Worth every penny to go ad free.

notamathguy ,

Great tool.

This works great for large sets of numbers. It allows you to see and edit the numbers that you have input.

App Privacy

The developer, KinkumaDesign, 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 Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Usage Data
  • Diagnostics

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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