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VKRPN implements most of the functionality of a standard scientific calculator. Rather than simulate an old-fashioned physical calculator in all their cryptic details, its main goal is to expose a clean and legible interface while providing direct access to the essential mathematical operations. There is also available a list of constants and unit conversion factors as well as a comprehensive calculation history.

The calculator employs the so-called reverse Polish notation, where the operator follows its operands. For example, evaluation of 5+7 is accomplished as 5 ↓ 7 +. In this scheme the parentheses are not needed at all. Hence, expressions such as (3+7)·(8−4) are easier to enter and evaluate.

The list of features:
✓ Reverse Polish notation
✓ Arithmetic operations, power and trigonometric functions and their inverses, hyperbolic functions and their inverses, percent calculations (such as 50+10%=55)
✓ User can arbitrarily and unambiguously convert between radians, degrees and degrees/minutes/seconds
✓ Tabbed list of math/physics constants and unit conversion factors
✓ Unlimited log of calculation history, user can return any value from the logbook
✓ Adjustable precision and other number formatting options
✓ Themes
✓ Supports portrait and landscape orientation, adapts to different screen sizes
✓ Graphical help screens/tutorials
✓ Haptic feedback

The app contains no advertisements or in-app purchases and doesn't require any permissions (only vibration for haptic feedback).

You are allowed to use this product only within the laws of your country/region. SharewareOnSale and its staff are not responsible for any illegal activity. We did not develop this product; if you have an issue with this product, contact the developer. This product is offered "as is" without express or implied or any other type of warranty. The description of this product on this page is not a recommendation, endorsement, or review; it is a marketing description, written by the developer. The quality and performance of this product is without guarantee. Download or use at your own risk. If you don't feel comfortable with this product, then don't download it.

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