# HP 15c Calculator — Official emulator of HP 15c > Official HP 15c scientific calculator emulator with RPN and advanced functions. (iPhone/iPad app by MORAVIA Consulting, spol. s r.o..) - Source: https://appshunter.io/ios/app/hp-15c-calculator/id503720774 (this page in markdown: same URL + `.md`) - Developer: [MORAVIA Consulting, spol. s r.o.](https://appshunter.io/developer/1673101600) - Category: Utilities, Business - Price: $14.99 - Rating: 4.80/5 from 207 App Store ratings · 305 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 45 MB - Languages: American English - Released: 2012-03-02 - Data updated: 2026-08-29 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/hp-15c-calculator/id503720774/reviews.md ## What is HP 15c Calculator? Meet the next generation of your favorite scientific calculator. The official HP 15c app, now brings a completely redesigned interface, a modern look, and improved functionality—while preserving the precision and reliability trusted by professionals for decades. This RPN calculator offers the features, algorithms and calculation sequences of the original 15c Scientific Calculator conveniently stored on your iPhone or iPad. The HP 15c You Know – Now Better Than Ever • Official emulator of legendary calculator device by HP • Identical algorithms, layout, and keystrokes as the original HP 15c • RPN (Reverse Polish Notation) for fast and efficient input • Matrix calculations, Complex functions, Numerical integration. • Ideal for math and engineering students and professionals • Programmable – up to 448 lines Be Ready. Anywhere. Anytime. Whether you’re in class, at the office, or on the go, HP 15c is ready when you are. Just launch the app on your iPhone and get to work. Download HP 15c today and experience the perfect blend of classic functionality and modern design. ## Key features - Official HP 15c emulator - RPN (Reverse Polish Notation) - Matrix calculations - Complex functions - Numerical integration - Programmable (448 lines) ## What do users think of HP 15c Calculator? Overall sentiment: positive **Pros** - 🚀 Excellent emulation of original HP 15C - 👍 Faithful reproduction of classic calculator - 👍 Includes original manual - 👍 Works just like the real thing - 👍 Vertical layout with key features - 👍 Great update with new features **Cons** - 🐛 Display issues in portrait mode - 🐛 Bugs with programming and trig functions - 🔇 Loud button click sound - 💰 Expensive for an app **Commonly reported bugs** - Numbers not aligned in display window - Display flashing after running programs - Incompatibility with latest iOS versions **Most requested features** - Copy and paste functionality - Ability to change calculator models - Option to disable button click sound - Better support for larger iPhone screens ## Recent user reviews (10 of 305) All indexed reviews: https://appshunter.io/ios/app/hp-15c-calculator/id503720774/reviews.md ### 5/5 — HP 15c *2026-08-12, version 3.0.2* Great reproduction of the classic! Works great in the iPhone 6. I'm an electrical engineer who still depends on my 15c. Main complaint is the very loud clicks for the buttons which is very annoying, especially since there is no way to disable or lower its volume from within the ap. Turning off the ringer on the side of the iPhone to disable sound works but is unacceptable. Hopefully HP will fix this soon - especially if enough of us complain. However, the calculating capabilities work exactly as the original. ### 5/5 — Just Like Old Times *2026-08-06, version 3.0.2* I have been an engineer for over 30 years. Always used HO 15. This app is even better than original calculator. ### 5/5 — Super *2026-07-01* Als Option bei einem zukünftigen Upgrade wäre das Umschalten auf den HP-11C noch toll. ### 5/5 — A Cientifica perfeita *2026-06-26* Eu uso essa HP desde da década de 80, eu formei na Politécnica somente com essa tecnologia da época..! ### 5/5 — Can’t live without this *2026-06-15, version 3.0.2* Been using this for years! ### 5/5 — Nice update *2026-06-13, version 3.0.2* Thanks for giving the emulator’s vertical layout the same features as the original calculator and the horizontal layout. ### 5/5 — Faithful replica *2026-05-25, version 3.0.2* Matches my actual 15C perfectly! ### 5/5 — Excellent App *2026-05-25, version 3.0.2* Very happy this spp is being maintained. Nice update. The 15c is one of the best calculators Hewlett-Packard ever made. ### 5/5 — iPhone XS Max iOS 13.5.1 *2026-05-23, version 3.0.2* Love thi new portrait format as so much easier to use which doesn’t have the limitation of the old basic calculator. Very pleased. Regards, Martin Basil ### 5/5 — Looks neat, works great *2026-05-11* This app is not just a retro gimmick. The calculator is very usable. My only complaint: The skin is a bit dark and low contrast for my taste. ## Frequently asked questions about HP 15c Calculator ### What is the HP 15c Calculator app? The HP 15c Calculator app is an official emulator of the legendary HP 15c scientific calculator. It features a redesigned interface and modern look while maintaining the precision and reliability of the original device. The app includes features like RPN input, matrix calculations, complex functions, and numerical integration. ### What are the key features of the HP 15c Calculator app? Key features include being an official emulator of the original HP 15c, identical algorithms and keystrokes, RPN for efficient input, matrix calculations, complex functions, numerical integration, and programmability up to 448 lines. It offers a blend of classic functionality with a modern design. ### How much does the HP 15c Calculator app cost? The provided information indicates that the app is a paid application. There are no mentions of in-app purchases or advertisements, suggesting a one-time purchase model. ### Who is the target audience for the HP 15c Calculator app? This app is ideal for math and engineering students and professionals who require a powerful and reliable scientific calculator. Its advanced features and familiar interface make it suitable for complex calculations and programming tasks. ### Can I use the HP 15c Calculator app on my iPhone or iPad? Yes, the app is designed to be conveniently stored and used on your iPhone or iPad. You can launch the app anytime, anywhere, whether you are in class, at the office, or on the go. ## Version history (last 5 releases) ### 3.0.2 — 2026-02-03 Stability improvements and small fixes. ### 3.0.1 — 2025-12-15 We’ve completely redesigned the HP 15c app to deliver a faster, cleaner, and more modern experience – while keeping everything you love about the classic scientific calculator. New in this version: • Brand new user interface with a refreshed, modern look • Full-screen vertical layout (finally!) • Improved graphics and Retina-optimized visuals • Redesigned settings for better customization • Enhanced performance and compatibility with the latest iOS devices • Bug fixes and under-the-hood improvements for smoother operation Still the HP 15c you trust – now more powerful and easier to use than ever. We’d love your feedback! If you notice anything that could be improved, please let us know directly in the app or email us at info@hpcalcs.com. ### 3.0.0 — 2025-10-20 We’ve completely redesigned the HP 15c app to deliver a faster, cleaner, and more modern experience – while keeping everything you love about the classic scientific calculator. New in this version: • Brand new user interface with a refreshed, modern look • Full-screen vertical layout (finally!) • Improved graphics and Retina-optimized visuals • Redesigned settings for better customization • Enhanced performance and compatibility with the latest iOS devices • Bug fixes and under-the-hood improvements for smoother operation Still the HP 15c you trust – now more powerful and easier to use than ever. We’d love your feedback! If you notice anything that could be improved, please let us know directly in the app or email us at info@hpcalcs.com. ### 2.3.4 — 2021-05-05 Updated for new devices and for newer versions of iOS. ### 2.3.2 — 2020-01-24 Bug Fixes ## Apps similar to HP 15c Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator HD Pro Lite](https://appshunter.io/ios/app/calculator-hd-pro-lite/id571121141) | 4.6 (51,312) | Free | Utilities | | [Panecal Scientific Calculator](https://appshunter.io/ios/app/panecal-scientific-calculator/id668500803) | 4.8 (1,947) | Free | Utilities | | [Calculator +ㅤ](https://appshunter.io/ios/app/calculator-plus/id1597933199) | 4.6 (4,519) | Free | Utilities | | [Calculator₊](https://appshunter.io/ios/app/calculator/id398129933) | 4.7 (1,726,794) | Free | Utilities | | [Calculator #](https://appshunter.io/ios/app/calculator/id458535080) | 4.6 (35,876) | Free | Utilities | | [Calculator +](https://appshunter.io/ios/app/calculator-plus/id351815470) | 4.6 (10,020) | Free | Utilities | ## More apps by MORAVIA Consulting, spol. s r.o. - [HP 12C Platinum Calculator](https://appshunter.io/ios/app/hp-12c-platinum-calculator/id328224790) - [HP 12c Financial Calculator](https://appshunter.io/ios/app/hp-12c-financial-calculator/id503641946) - [Blockly for Dash & Dot robots](https://appshunter.io/ios/app/blockly-for-dash-and-dot-robots/id906750147) - [Go for Dash & Dot Robots](https://appshunter.io/ios/app/go-for-dash-and-dot-robots/id928519463) - [Path for Dash robot](https://appshunter.io/ios/app/path-for-dash-robot/id928643204) All apps by MORAVIA Consulting, spol. s r.o.: https://appshunter.io/developer/1673101600 ## Related topics [hp 15c calculator](https://appshunter.io/ios/topics/hp-15c-calculator) · [hp 15c](https://appshunter.io/ios/topics/hp-15c) · [hp 48 calculator](https://appshunter.io/ios/topics/hp-48-calculator) · [hp rpn calculator](https://appshunter.io/ios/topics/hp-rpn-calculator) · [hp 10bii calculator](https://appshunter.io/ios/topics/hp-10bii-calculator) · [hp calculator](https://appshunter.io/ios/topics/hp-calculator) · [hp calculator 12c](https://appshunter.io/ios/topics/hp-calculator-12c) --- *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 2026-08-29.*