# Rapid & Quick Calculator Pro — History Tape, Tax and Discount

> A versatile calculator with history, tax, discount, and customization features. (iPhone/iPad app by KinkumaDesign.)

- Source: https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562 (this page in markdown: same URL + `.md`)
- Developer: [KinkumaDesign](https://appshunter.io/developer/385697725)
- Category: Finance, Utilities
- Price: $3.99
- Rating: 4.90/5 from 205 App Store ratings · 71 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.6 · 7 MB
- Languages: Japanese, Chinese (Simplified, China), American English, Korean
- Released: 2015-12-18
- Data updated: 2026-09-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562/reviews.md

## What is Rapid & Quick Calculator Pro?

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!

## Key features

- History tape for reusing answers
- Sales tax and discount calculations
- Precise rounding settings
- Editable expressions with cursor keys
- Multiple color themes and font options
- Share expressions and answers

## What do users think of Rapid & Quick Calculator Pro?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 📜 History feature is helpful
- 📋 Copy and paste functionality
- ✨ Customizable appearance
- ✅ Clear display of calculations
- 💰 Good value for paid version
- 💯 Highly recommended
- 💡 Tax and tip calculation features
- 🖱️ Intuitive interface
- 🧮 Handles large numbers
- 📝 Edit past expressions
- ✅ Alert before clearing all
- 🔊 Input sound is liked
- 🧮 Summation is easy
- 🖱️ Backspace for input errors
- ✅ Tape feature is great
- 📈 Export to other apps
- ✨ Clean and elegant design
- 💯 Best calculator
- 👍 Functional and simple
- 🚀 Fast calculations
- ✅ Virtual paper trail
- 💯 Worth the price

**Cons**

- 🐛 App crashes on paste
- 🐛 Random calculations appear
- 🐛 Laggy input on startup
- 🐛 iPad bug with screen switching
- 🐛 Swipe responsiveness issues
- 🐛 Sound effects stopped working
- 🐛 Paid version not intuitive for tax
- 🐛 History lost after backgrounding

**Commonly reported bugs**

- App crashes when pasting copied expression and pressing equals
- Random calculations appear in current box after clearing and reopening
- Laggy drawing of input on startup
- App becomes unusable on iPad after screen switching
- Swipe response is poor
- Sound effects stopped working despite being enabled
- History is lost when switching to background and returning
- Paid version tax buttons are not functional

**Most requested features**

- Dark mode for icon
- Larger calculation display window
- Separate tax buttons (pre/post tax)
- Vibration option for input
- Add memo to history
- Sort history by newest
- Button for billions/ten millions
- Square root function
- Setting for decimal places
- Setting for decimal marks
- Continuous calculation without equals

## Recent user reviews (10 of 71)

All indexed reviews: https://appshunter.io/ios/app/rapid-and-quick-calculator-pro/id1067631562/reviews.md

### 5/5 — 使いやすすぎる！

*2026-02-21*

長らく無料版を使わせていただいていたのですが、こんなに使いやすいアプリを作っていただいたことに報いたくなり、有料版を購入しました。
めちゃめちゃ使ってます。
履歴が残るのとコピーができるのがすごく助かっていて、もうこれ無しじゃ満足できない体になってしまいました🫨本当にありがとうございます。
少しですが美味しいもの食べてください。

### 5/5 — Rapid & Quick Calculator Pro

*2025-11-28*

This is one of the very best calculator apps that I’ve ever used. It’s very easy and simple to use and has a running history of everything you’ve done. I would certainly recommend it to anyone looking for a calculator with history.

### 5/5 — 使いやすい

*2025-08-19*

計算式が表示され続けて、使いやすいです。また計算結果もたくさん表示されて便利です。
あとはアイコンがダークモードになれば良いな

### 5/5 — 使いやすい

*2025-06-05*

いろんな使い方が出来て使いやすい。式をコピーしたり、複製して編集したり、、、
強いて言うなら、計算式の窓（表示）を画面大にできると、もっと使いやすい。ちよまっとした計算式なら良いが長くなると見にくくなるので。

### 5/5 — Very useful

*2025-05-23, version 6.6.0*

A+++

### 5/5 — Excellent

*2025-02-12*

Very intuitive

### 5/5 — 起動直後

*2024-12-09*

アプリ起動直後の入力が受け付けてはいるんだけど、描画が遅れて時間差でドドドってきてしまいます。iPhone16pro

### 4/5 — 使いやすいです

*2024-11-27*

とても良いのですが要望が2点あります。
税抜き、税込みのボタンを別にして欲しい。
スワイプの反応が悪いので。
iPhone14pro maxです。
入力時にタップ音だけでなくバイブも選択できるようになれば最高です。
ご検討よろしくお願いします。

### 5/5 — ❤️

*2024-03-03*

最高。

### 5/5 — BEST CALCULATOR

*2024-02-24*

It has the best history of any calculator I've tried.  I have had it for a few years now & still love it!

## Frequently asked questions about Rapid & Quick Calculator Pro

### What does Rapid & Quick Calculator Pro do?

This app is a comprehensive calculator that includes all basic functions along with advanced features. It allows for sales tax and discount calculations, provides a history tape to reuse previous answers, and offers precise rounding settings.

### What are the key features of this calculator?

Key features include a history tape, equation editing with cursor keys, multiple tax and discount calculation options, precise rounding, customizable themes and fonts, and the ability to share expressions and answers.

### Is this app free or paid?

This is the paid version of the app, which does not display ads and includes four tax keys. A free version is also available with fewer tax keys and advertisements.

### What devices is this app compatible with?

The app is designed for mobile devices and also supports iPad, including Slide Over and Split View functionality if available on your device.

### What are common use cases for this calculator?

Common use cases include everyday calculations, calculating sales tax on purchases, determining discounts on items, and managing simple financial math. The history tape is useful for reviewing and reusing calculations.

## Version history (last 5 releases)

### 6.7.0 — 2026-05-03

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!

### 6.6.0 — 2024-10-30

- Stability improvements​​

### 6.5.0 — 2022-09-14

- Stability improvements​​.

### 6.4.1 — 2021-05-05

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.

### 6.4.0 — 2020-10-01

Thank you for using R&Q Calculator.
- Fixed minor bug
- Update internal libraries
we appreciate for your feedback.

## Apps similar to Rapid & Quick Calculator Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Rapid & Quick Calculator](https://appshunter.io/ios/app/rapid-and-quick-calculator/id1046214532) | 4.8 (1,473) | Free | Finance |
| [Financial Calculator: Percent](https://appshunter.io/ios/app/financial-calculator-percent/id957134762) | 4.7 (14,664) | Free | Finance |
| [Sales Tax Calculator >](https://appshunter.io/ios/app/sales-tax-calculator/id737369063) | 4.8 (2,517) | Free | Finance |
| [Fast Percent - Calculator Tool](https://appshunter.io/ios/app/fast-percent-calculator-tool/id812021371) | 4.5 (414) | Free | Finance |
| [Discount Calculator ∙ Sale Amt](https://appshunter.io/ios/app/discount-calculator-sale-amt/id1143972266) | 4.7 (2,981) | Free | Finance |
| [Sales Tax Calculator - Tax Me](https://appshunter.io/ios/app/sales-tax-calculator-tax-me/id403569006) | 4.8 (5,429) | Free | Finance |

## More apps by KinkumaDesign

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All apps by KinkumaDesign: https://appshunter.io/developer/385697725

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*