Rapid & Quick Calculator6.7.0

Over 300,000 downloads worldwide!

A fast, friendly calculator built for everyday use - shopping, splitting bills, household budgeting, and more.

FEATURES
* History Tape - review your past calculations and reuse any answer with a single tap
* Expression Input - type the whole equation, just like you'd write it on paper
* Sales Tax - toggle tax-included/excluded with a single button; swipe to switch between multiple tax rates
* Percentage Discounts - e.g. 100 - 30% = 70
* Precise Rounding Settings
* Multiple Color Themes
* Multiple Font Sizes and Typefaces
* Arrow Keys - move the cursor left or right to edit any part of the expression
* Share - send expressions and answers to other apps
* iPad Support - including Slide Over and Split View on supported devices
* Sound Effects

To reuse or edit an equation from your history, swipe left on it (or touch and hold) to open the menu.

We'd love to hear your feedback!

This is the free version. A paid version is also available - it removes ads and offers four tax keys (the free version has two).

Version History We've refreshed the wording across all languages for a more natural feel.

- Refined translations and wording in each language to feel more natural and easier to read
- Added support for iOS 26
- Now requires iOS 17.6 or later
- Improved overall stability

Thank you for your continued support! 6.7.0 May 3 - Stability improvements​​ 6.6.0 10/30/2024 - Stability improvements​​ 6.5.1 10/08/2022 - Stability improvements​​. 6.5.0 09/14/2022 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. 6.4.1 05/04/2021 Thank you for using R&Q Calculator.
- Fixed minor bug
- Update internal libraries
we appreciate for your feedback. 6.4.0 10/01/2020 Thank you for using R&Q Calculator.
- Fixed minor bug
we appreciate for your feedback. 6.3.4 02/21/2020 Thank you for using R&Q Calculator.
- [Fix] Support Dark Mode
we appreciate for your feedback. 6.3.3 10/08/2019 Thank you for using R&Q Calculator.
- [Fix] Fixed an issue where the layout of the calculation buttons would be corrupted on iOS 13 iPad task
we appreciate for your feedback. 6.3.2 10/06/2019 Thank you for using R&Q Calculator.
- [Fix] Calculation is different from the display of the tax button when launched from the background task
we appreciate for your feedback. 6.3.1 04/06/2019 Thank you for using R&Q Calculator.
- Support Slide Over and Split View in iPad. (If the device is supported)
- Added a new calculation order calculated in order. e.g. 1 + 2 x 3 = 9.
(Default order is the same as math. 1 + 2 x 3 = 7)

we appreciate for your feedback. 6.3.0 07/21/2018 Thank you for using this Calculator.

- Improved the stability of saving and loading calculation history and editing expressions
- If the result of the calculation has an error, the app does not add it to the history but displays the alert.
- If the last character of an expression is a fourth arithmetic operation, the app does not make it an error, but deletes the last one and calculate it.

we appreciate for your feedback. 6.2.0 11/28/2017 Thank you for using this Calculator.

- Changed tax keywords to tax-included, tax-excluded
- Save editing expression when app enters background mode
- Updated internal program to the latest version (swift4)

we appreciate for your feedback. 6.1.0 10/30/2017 Thank you for using this Calculator.

- New app icon
- If necessary, insert 0 before the decimal point
- Changed launch screen

we appreciate for your feedback. 6.0.0 07/11/2017 Thank you for using this Calculator.

- Bug Fixed: The hue is fixed to red in color edit screen.

we appreciate for your feedback. 5.8.1 06/12/2017 Thank you for using this Calculator.

- NEW! When you tap the AC button, you can popup confirmation action sheet whether clear all or not. Please turn on this option on preference screen.
- Fixed: the app crashes when clicking the AppStore review link. 5.8.0 04/26/2017 Thank you for using this Calculator.
This version fixed some problems.

- Fixed: Displays the help page layout
- Fixed: Tax calculation when the decimal point is set to comma
- Fixed: History layout position of iPad in iOS 10.3.1 5.7.0 04/23/2017 Thank you for using this Calculator.

- Improve stability 5.6.1 09/06/2016 Thank you for using Calculator.
- Adjust Business Color Themes
- Bugfix: Cannot back to main screen from preferences screen if you interrupt edge swipe back 5.6.0 07/31/2016 Thank you for using Zippy Calc.

- Add Korean
- A little adjustment 5.5.0 07/20/2016 - NEW! Add new color themes
- Add the Chinese (Simplified) 5.4.0 07/14/2016 - NEW! Save calculation history automatically when app was quitted.
App can display last calculation history next launch time after app was quitted completely. 5.2.0 03/22/2016 Change a few texts 5.1.0 03/16/2016 - NEW! Answer Rounding. You can turn on rounding function in settings screen. 5.0.0 03/04/2016 Bug Fix: Crash when share button was tapped in iPad 4.1.1 02/17/2016