# JRPN 15C

> HP-15C scientific calculator emulator with advanced math functions. (iPhone/iPad app by Philip Starner.)

- Source: https://appshunter.io/ios/app/jrpn-15c/id6484504019 (this page in markdown: same URL + `.md`)
- Developer: [Philip Starner](https://appshunter.io/developer/566668849)
- Category: Productivity, Utilities
- Price: Free
- Rating: 5.00/5 from 5 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 26 MB
- Languages: English
- Released: 2024-04-11
- Data updated: 2026-06-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jrpn-15c/id6484504019/reviews.md

## What is JRPN 15C?

Scientific calculator that simulates an HP-15C. It simulates the appearance and behavior of the original, including the seven-segment display, and the little blink you get when entering numbers. Includes complex math, matrices, numerical integration, solving for the root of an equation and statistics. Very state of the art for 1982!

Full source is available on Github.

## Key features

- HP-15C simulation
- Seven-segment display emulation
- Complex math
- Matrices
- Numerical integration
- Equation root solving
- Statistics

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/jrpn-15c/id6484504019/reviews.md

### 5/5 — Wonderful.

*2026-01-04*

Far superior than the one offered by MORAVIA consulting!

### 5/5 — JRPN 15C Perfect

*2025-09-02*

JRPN’s two calculators JRPN 15C and JRPN 16C) are just perfect. Everything works flawlessly and no ads. I use JRPN 15C almost exclusively. Highly recommended! Thank you!

### 5/5 — "Thoroughly Enjoyable”

*2024-08-12*

Functions just like my original HP-15C. Fits nicely on my iPad while occupying very little memory storage compared to other similar apps.

### 5/5 — Excellent free app

*2024-06-18*

The developer’s software implementations of both the HP15C and HP16C are excellent. A very thoughtfully laid out portrait mode is a fantastic bonus too (the original HP calculators were landscape only). The f and g function legends have good contrast and are easy to read but there is also an option to customise them using different colours. You can also customise the colours of the LCD display. Programs can be imported and exported, you can take a look at the back panel which acts as a handy reference, just like on the original models, and there is a link to a user manual. The icing on the cake is that these two great apps are totally free so I have extra praise for the developer for taking the time to recreate these two wonderful calculators and provide them at no charge.

## Frequently asked questions about JRPN 15C

### What is JRPN 15C?

JRPN 15C is a free scientific calculator application that accurately simulates the appearance and behavior of the classic HP-15C calculator from 1982. It includes advanced mathematical functions.

### What advanced math functions does JRPN 15C offer?

JRPN 15C supports complex math, matrices, numerical integration, solving for the root of an equation, and statistics. These features replicate the state-of-the-art capabilities of the original HP-15C.

### Does JRPN 15C have ads?

No, JRPN 15C does not contain advertisements. It is a completely free application with no ads.

### What devices is JRPN 15C available on?

JRPN 15C is available for iPhone and iPod devices. It is designed for iOS.

### How often is JRPN 15C updated?

JRPN 15C was last updated on April 11, 2024, with version 2.1.13. The developer actively maintains the application.

### What is the user rating for JRPN 15C?

JRPN 15C has a perfect rating of 5.0 stars based on 5 user ratings, indicating high user satisfaction.

### Is the source code for JRPN 15C available?

Yes, the full source code for JRPN 15C is publicly available on Github, allowing for transparency and community contributions.

### What is the age rating for JRPN 15C?

JRPN 15C has an age rating of 4+, making it suitable for a wide range of users, including younger individuals interested in mathematics.

## Version history (last 1 release)

### 2.1.13 — 2024-04-11

No release notes.

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## More apps by Philip Starner

- [HomeFlik](https://appshunter.io/ios/app/homeflik/id1222118780)
- [Zerkle](https://appshunter.io/ios/app/zerkle/id1555113270)
- [JRPN 16C](https://appshunter.io/ios/app/jrpn-16c/id6484402697)

All apps by Philip Starner: https://appshunter.io/developer/566668849

## Related topics

[jrpn 15c](https://appshunter.io/ios/topics/jrpn-15c) · [rpn calc](https://appshunter.io/ios/topics/rpn-calc)

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*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 2026-06-19.*