# RPN Scientific > Free scientific calculator emulating HP 10C with RPN and calculation tape. (iPhone/iPad app by William Crevier.) - Source: https://appshunter.io/ios/app/rpn-scientific/id6446224984 (this page in markdown: same URL + `.md`) - Developer: [William Crevier](https://appshunter.io/developer/1671454364) - Category: Business, Education - Price: Free - Rating: 3.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 12.0 · 27 MB - Languages: English - Released: 2023-03-13 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/rpn-scientific/id6446224984/reviews.md ## What is RPN Scientific? RPN Scientific is a scientific Reverse Polish Notation (RPN) calculator based on the venerable Hewlett Packard 10C scientific calculator. It is free, does not contain any ads, and does not collect any information about you or your device. It performs most of the 10C’s math functions but does not include the ability to be programmed. Users are assumed to be familiar with using RPN calculators.  Results text can be copied to the clipboard. It also supports pasting of numbers from other applications. RPN Scientific has a 25-level stack and supports ten store and recall memory locations. Values are stored between sessions. It supports fixed, scientific, general, engineering, and currency formats. The number of decimal places and/or significant figures displayed is set by the user in a popup window accessed via the menu icon on the upper left. The calculator has a “tape” that records each calculation. If the display is too narrow (iPhone), the tape is not visible, but can be seen in a popup window selected with the menu icon. The tape can be copied and cleared; the tape font size can be adjusted. The app responds to touch, mouse, and keyboard inputs. Key codes are generally intuitive. They are listed on the “About” page, which is accessed by using the menu icon. ## Key features - Reverse Polish Notation (RPN) calculator - Emulates Hewlett Packard 10C - 25-level stack - Ten store and recall memory locations - Multiple display formats - Calculation tape with adjustable font size - Copy/paste functionality ## Frequently asked questions about RPN Scientific ### What is RPN Scientific? RPN Scientific is a free scientific calculator application designed to emulate the functionality of the Hewlett Packard 10C calculator. It utilizes Reverse Polish Notation (RPN) for calculations and offers features like a 25-level stack and ten memory locations. ### Does RPN Scientific have ads? No, RPN Scientific is completely free and does not contain any advertisements. It is designed to provide a clean and uninterrupted user experience for calculations. ### What devices does RPN Scientific support? RPN Scientific is available on Mac, iPhone, iPad, and iPod devices. This broad compatibility allows users to perform calculations across various Apple platforms. ### How often is RPN Scientific updated? The latest version of RPN Scientific, 2.6, was released on January 11, 2024. Updates typically include bug fixes and performance improvements to ensure a reliable user experience. ### Can I program RPN Scientific? RPN Scientific emulates most of the math functions of the Hewlett Packard 10C but does not include the ability to be programmed. It is intended for direct calculation use rather than custom programming. ### What is the age rating for RPN Scientific? RPN Scientific has an age rating of 4+. This indicates that the app is suitable for users of all ages and does not contain any mature content. ### How does RPN Scientific handle data privacy? RPN Scientific is designed with user privacy in mind. It does not collect any information about you or your device, ensuring that your usage remains private and secure. ### What display formats does RPN Scientific support? RPN Scientific supports fixed, scientific, general, engineering, and currency formats. Users can customize the number of decimal places or significant figures displayed through the menu. ## Version history (last 5 releases) ### 2.6 — 2024-01-11 Minor changes to graphical interface. ### 2.5 — 2023-12-31 This version added cut and paste capabilities and improved keyboard support. ### 2.2 — 2023-03-31 Added fourth register to results screen. Fixed bug when used with large text in accessibility settings ### 2.0 — 2023-03-23 Fixed bug in iPad orientation change code. ### 1.0 — 2023-03-13 No release notes. --- *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 2026-06-10.*