Rapid & Quick Calculator
Rapid & Quick Calculator Summary
Rapid & Quick Calculator is a ad-supported iOS app in Finance by KinkumaDesign. Released in Oct 2015 (10 years ago). It has 1.5K ratings with a 4.79★ (excellent) average. Based on AppGoblin estimates, it reaches roughly 14.8K monthly active users and generates around $<10K monthly revenue (0% IAP / 100% ads). Store metadata: updated May 3, 2026.
Recent activity: 1.00 new ratings this week View trends →
Store info: Last updated on App Store on May 3, 2026 .
4.79★
Ratings: 1.5K
Screenshots
App Description
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).