Search app
CSR Racing 2

Active RPN Calculator

Utilities & Education
Last Update
Jun 17, 2018
View in store

Store Performance Index


Store Performance Index shows overall performance of your app on app stores. It is based on combined ASO & reviews metrics.

See more data

Ratings & Reviews performance for Active RPN Calculator

Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.

Number of reviews,


Avg rating,



959 chars

Enjoy classic RPN (Reverse Polish Notation) with this easy-to-use programmable scientific calculator. With an animated stack, 10 memories that show when needed, and easy keystroke programming, this new interpretation of what RPN can offer is excellent for newcomers and seasoned professionals alike. For programming with multiple inputs and multiple outputs, the visible stack provides clarity.<br><br>If you are new to RPN or want to try before you buy, download "Access RPN" - a learning version for FREE.<br><br>Background: Numbers are entered first in RPN, and then the operation is applied. e.g. 2 [Enter] 3 + will produce 5.<br><br>Features:<br>- visible and animated 4-level stack<br>- programmable: four user programs (simple keystroke programming, up to 100+ steps each)<br>- scientific functions<br>- 10 memories<br>- built-in help<br><br>Active RPN is a powerful and flexible scientific calculator with multiple memories and amazing programming.

 Why to reply to reviews?

User reviews affect conversion to installs and app rating. Featured and helpful reviews are the first to be noticed by users and in case of no response can affect download rate. This is why it is highly recommended to reply to them.

Jun 22, 2011

Fast and responsive without lags in data entry or calculations. Simple, good looking interface has some of the old HP style, without trying to be an exact replica. If you don't need the more esoteric functions most of the time, they can be hidden for a cleaner appearance. Animation of the stack is a nice touch. Good work, but can you make the icon look as nice as the rest of the app? The current one is ugly, IMO. Also, how about a retina display update for iPhone 4?!

Jun 18, 2018

I love this app. It was my go-to calculator on many iPhones before IOS 11 stopped supporting 32 bit apps. But I stubbornly left it on my home screen “just in case” and have now been rewarded. Has a great interface. The keys are just the right size. Customizable. Highly recommend.

Brigadier Chimp
Sep 18, 2018

Thank you so much for updating this to 64 bit! I was sad when the whole 32 to 64 bit mandate happened and this no longer worked. I tried other rpn calculators, even the paid ones, and this was still the best. Thanks you!

Oct 09, 2013

PLEASE UPDATE FOR iPhone 5 AND RETINA!!!! I love this calculator, and its an absolute steal at .99 cents. The developer could easily charge $2.99 for it. If RPN is your thing this app is fantastic. If you are just interested in checking out what RPN and programmable calculators are capable of then this is also for you.

Sep 30, 2013

I'm glad I looked for an updated RPN app to replace the laggy i48 app I have been using for the past 3 years. This has a much clearer interface, is faster, and has a dual display. Great! Would have paid!!

CSR Racing 2

About Active RPN Calculator

Developed by Nolan Piper.

Active RPN Calculator is ranking in   Utilities & Education

Last update was at Jun 17, 2018and the current version is 2.0.

To see all other keys and revenue click here 317847341

Active RPN Calculator have a 26a user reviews.

Active RPN Calculator was released in the App Store. It is developed by Nolan Piper, who have also released the following apps.

Active RPN Calculator has 26 user reviews.​

Active RPN Calculator has an average rating of 4.8. ​The latest version of Active RPN Calculator 2.0​ ​​was ​released on Jun 17, 2018​.

You can download Active RPN Calculator ​here

Find growth insights on our blog

How to Respond to Google Play Reviews

How to Respond to Google Play Reviews

How to Respond to App Store Reviews

How to Respond to App Store Reviews

AppFollow identifies top apps in the App Store and Google Play in 2020

AppFollow identifies top apps in the App Store and Google Play in 2020

React to user feedback and market trends faster