RPN9: RPN Calculator1.1.0 - Google Play
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Publisher Description
RPN scientific calculator with unlimited stack, undo, complex numbers and stats
RPN9 is a full-featured RPN (reverse Polish notation) scientific calculator for engineers, scientists, college students and advanced high-school students. Its keyboard, shifted functions and menus follow the classic RPN scientific pocket calculators, so the keys are where you expect them.
Stack
• Unlimited stack: nothing falls off the top
• Undo and redo
• 26 storage registers, A to Z
• The stack, registers and settings are kept when the app closes
Scientific functions
• Trigonometric and hyperbolic functions and their inverses
• Logarithms, powers, roots and factorial
• Polar and rectangular conversion, hours-minutes-seconds
• Unit conversions: kg/lb, °C/°F, cm/in, l/gal
Complex numbers
• Complex arithmetic and complex trigonometry
Statistics and probability
• Mean, weighted mean and standard deviation
• Linear regression and estimation
• Combinations, permutations and random numbers
Number bases and display
• Decimal, hexadecimal, octal and binary integers, with logical operators (AND, OR, XOR, NOT)
• Fixed, scientific and engineering display modes
• Rational approximation: see a result as a fraction
The built-in reference documentation explains RPN and every function.
About RPN9: RPN Calculator
The company that develops RPN9: RPN Calculator is Flavio Ribeiro. The latest version released by its developer is 1.1.0.
To install RPN9: RPN Calculator on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-10-04 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the RPN9: RPN Calculator as malware as malware if the download link to com.protasio.rpn9 is broken.
How to install RPN9: RPN Calculator on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the RPN9: RPN Calculator is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by RPN9: RPN Calculator will be shown. Click on Accept to continue the process.
- RPN9: RPN Calculator will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version 1.1.0
posted on 2026-10-04
API level update and bug fixes
version 1.0.10
posted on 2022-12-16
Targeting Android 12 (SDK 31)
version 1.0.9
posted on 2021-05-24
Targeting Android 10.0
version 1.0.8
posted on 2016-04-12
Disclaimer
Official Google Play Link
We do not host RPN9: RPN Calculator on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
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