# \|RPN\| Scientific Calculator > Reverse Polish Notation scientific calculator with customizable layouts and no ads. (iPhone/iPad app by Bradley Smith.) - Source: https://appshunter.io/ios/app/rpn-scientific-calculator/id1069467997 (this page in markdown: same URL + `.md`) - Developer: [Bradley Smith](https://appshunter.io/developer/1069467996) - Category: Utilities, Productivity - Price: $0.99 - Rating: 2.30/5 from 3 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 16 · 2 MB - Languages: American English - Released: 2016-03-15 - Data updated: 2026-08-15 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/rpn-scientific-calculator/id1069467997/reviews.md ## What is |RPN| Scientific Calculator? |RPN| Scientific Calculator is a calculator which features a variety of color schemes and layouts. It utilizes Reverse Polish Notation, a viewable stack, selectable portrait and landscape layouts, online visual help and many more. The application is meant to be as flexible and powerful as possible, without sacrificing usability. |RPN| does not have ads, and never will, nor does it use in-app purchases. All functionality comes with the purchase. Here is a youtube playlist with some helpful videos: https://www.youtube.com/playlist?list=PLucgGVHO2sKhnnNf1gapHS4Zy7u69VGAs ## Key features - Reverse Polish Notation (RPN) - Viewable stack - Selectable portrait/landscape layouts - Customizable color schemes - Online visual help - No ads or in-app purchases ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/rpn-scientific-calculator/id1069467997/reviews.md ### 5/5 — Awesomeness *2026-07-17* Teacher banned it at my school because it had to many functions and was very easy to use. She said it explained how to do the problem for you ### 5/5 — Nice, flexible calculator *2024-12-13* Does what it needs to do, and then some. I especially like the programmer modes. Make the settings screens work better for five stars. BEST INVESTMENT EVER!!!!!! ### 1/5 — Will not update- Will not reload *2017-12-01* I gave this one star cause I have to. Error message for new update. Deleted app and tried to reload. Won’t load. Time to get another calc app ### 1/5 — Unable to download after last update *2017-11-26* Purchased this app but am unable to download the latest update. Get an error message every time. Deleted app and try to download - same error message. Now nothing is there and I’ve wasted my money..... :( ### 4/5 — Nice, flexible calculator *2016-03-15* Does what it needs to do, and then some. I especially like the programmer modes. Make the settings screens work better for five stars. ## Frequently asked questions about |RPN| Scientific Calculator ### What is Reverse Polish Notation (RPN) in |RPN| Scientific Calculator? Reverse Polish Notation (RPN) is a method of calculation where operators follow their operands. This differs from standard infix notation where operators are placed between operands. Many users find RPN more efficient for complex calculations. ### Does |RPN| Scientific Calculator have ads? No, |RPN| Scientific Calculator does not have ads and never will. The developer explicitly states that all functionality is included with the purchase, ensuring an ad-free experience. ### What devices does |RPN| Scientific Calculator support? |RPN| Scientific Calculator is available for iPhone, iPad, and iPod. It offers selectable portrait and landscape layouts for optimal use on different screen sizes. ### How often is |RPN| Scientific Calculator updated? The latest version is 1.31, released on December 18, 2025. While specific update frequency isn't detailed, the app has received updates since its initial release on March 15, 2016. ### What is the age rating for |RPN| Scientific Calculator? |RPN| Scientific Calculator has an age rating of 4+. This indicates it is suitable for children and adults and does not contain content inappropriate for younger users. ### Can I try |RPN| Scientific Calculator before buying? This application is a paid app, priced at $0.99. There is no free trial mentioned, so the purchase is required to access and use all its features. ### What is the user sentiment for |RPN| Scientific Calculator? Based on the provided data, |RPN| Scientific Calculator has a rating of 2.3 stars from 3 ratings. This suggests a mixed to negative user sentiment, with limited user feedback available. ### Does |RPN| Scientific Calculator offer different pricing tiers? No, |RPN| Scientific Calculator is a one-time purchase at $0.99. All functionality is included with this single purchase, and there are no in-app purchases or subscription tiers. ## Version history (last 5 releases) ### 2.07 — 2026-07-23 Reworked base code and fixes with decimal rounding, etc. ### 2.04 — 2026-07-18 Layout fixes and refactoring. ### 1.60 — 2026-07-16 Fixed bug with the notch display. Made significant digit changes persistent. First version cleaned up and maintained by AI. ### 1.31 — 2025-12-18 Updated for iOS 18 and 26 ### 1.27 — 2023-10-09 Library update and new iOS target ## Apps similar to |RPN| Scientific Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,271) | Free | Utilities | | [Calc Pro - The Top Calculator](https://appshunter.io/ios/app/calc-pro-the-top-calculator/id438580059) | 4.7 (358) | $7.99 | Utilities | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (9,987) | Free | Utilities | | [Calculi: Scientific Calculator](https://appshunter.io/ios/app/calculi-scientific-calculator/id452182503) | 4.4 (374) | Free | Utilities | | [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,876) | Free | Utilities | | [Calculator⁼](https://appshunter.io/ios/app/calculator/id487127942) | 4.6 (358,262) | Free | Utilities | ## More apps by Bradley Smith - [Click The Dots!](https://appshunter.io/ios/app/click-the-dots/id6775087244) - [Pickup Day](https://appshunter.io/ios/app/pickup-day/id6796188266) All apps by Bradley Smith: https://appshunter.io/developer/1069467996 ## Related topics [scientific calculator rpn](https://appshunter.io/ios/topics/scientific-calculator-rpn) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*