Doesn't calculate correctly
I was looking for a basic, fast loading, RPN calculator. This one looks nice, but doesn't give correct results, or is not responsive to key presses.
Free
In-App Purchases
About
This utility app functions as a reverse Polish notation calculator. Users input numbers and operations using a stack-based interface to perform calculations. It's designed for straightforward mathematical tasks.
✓Reverse Polish Notation (RPN) input
✓Stack-based operation
✓Intuitive digit and operation buttons
✓Clear result display
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What's New in RPN
1.3.1
July 16, 2026
bug fixes.
1
In-App Purchases
$0.49
Stack LCD
Keep track of the entered number with a small display.
User reviews
Developer apps
FAQ
How do I perform an operation in RPN?
To perform an operation, first tap the numbers using the digit buttons. Press the orange 'Enter' button to insert each number into the stack. Once all numbers are entered, tap the desired operation button to execute it. The result will be displayed but not automatically added back to the stack.
What is reverse Polish notation (RPN)?
Reverse Polish Notation (RPN) is a mathematical notation where every operator follows all of its operands. This means you enter numbers first, then the operation, which can simplify complex calculations for some users.
Is RPN suitable for complex calculations?
RPN can be very efficient for complex calculations once you are familiar with the notation. It eliminates the need for parentheses and can streamline the input process for multi-step equations.
What devices is RPN available on?
RPN is available on devices compatible with Android. The specific version is 1.3, and it was last updated on June 19, 2026.
What is the age rating for RPN?
RPN has an age rating of 4+, making it suitable for a wide range of users, including younger individuals learning basic arithmetic.
How often is RPN updated?
The latest version of RPN is 1.3, and it was last updated on June 19, 2026. While specific update frequency isn't detailed, this indicates recent development.
Does RPN have ads?
The provided data does not specify if RPN contains advertisements. However, it is listed as free with no in-app purchases, suggesting a potentially ad-free experience.