# JRPN 16C

> HP 16C programmer's calculator simulation with RPN and seven-segment display. (iPhone/iPad app by Philip Starner.)

- Source: https://appshunter.io/ios/app/jrpn-16c/id6484402697 (this page in markdown: same URL + `.md`)
- Developer: [Philip Starner](https://appshunter.io/developer/566668849)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.33/5 from 3 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 26 MB
- Languages: English
- Released: 2024-04-14
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jrpn-16c/id6484402697/reviews.md

## What is JRPN 16C?

Programmer's calculator that simulates an HP 16C. It simulates the appearance and behavior of the original, including the seven-segment display, and the little blink you get when entering numbers. The 16C's windowing functions are implemented, but can be disabled to allow the display of longer numbers at one time.

Full source is available on Github. There is no advertising of any kind -- this is a hobby project, and a bit of a labor of love.

Do be aware that the 16C is a calculator intended for computer programmers. If you're not familiar with hexadecimal or stack-based RPN calculators, this probably isn't what you're looking for!

## Key features

- HP 16C calculator simulation
- Seven-segment display
- Reverse Polish Notation (RPN) input
- Windowing functions
- Optional longer number display
- Open-source on GitHub


## Frequently asked questions about JRPN 16C

### What is JRPN 16C?

JRPN 16C is a mobile application that simulates the HP 16C programmer's calculator. It replicates the original calculator's appearance, behavior, and features, including its seven-segment display and RPN input.

### Is JRPN 16C free to use?

Yes, JRPN 16C is completely free to download and use. It is a hobby project with no advertising or in-app purchases.

### Does JRPN 16C have ads?

No, JRPN 16C does not contain any advertising. The developer has stated it is a hobby project and a labor of love.

### What devices does JRPN 16C support?

JRPN 16C is available for iPhone and iPod devices. It runs on iOS.

### How often is JRPN 16C updated?

JRPN 16C was last updated on April 14, 2024, with version 2.1.13. The release date of the initial version was also April 14, 2024, suggesting recent and active development.

### What is the age rating for JRPN 16C?

JRPN 16C has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Can I disable the windowing functions in JRPN 16C?

Yes, the windowing functions of the HP 16C are implemented in JRPN 16C but can be disabled. This allows for the display of longer numbers at one time.

### Where can I find the source code for JRPN 16C?

The full source code for JRPN 16C is available on GitHub. This allows users to inspect or contribute to the project.

## Version history (last 1 release)

### 2.1.13 — 2024-04-14

No release notes.

## Apps similar to JRPN 16C

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [i41CX+](https://appshunter.io/ios/app/i41cx-plus/id289068865) | 4.8 (100) | $24.99 | Productivity |
| [Vintage-45](https://appshunter.io/ios/app/vintage-45/id506402272) | 4.8 (19) | $0.99 | Productivity |
| [RPN-45 SD](https://appshunter.io/ios/app/rpn-45-sd/id509923051) | 4.3 (15) | $1.99 | Productivity |
| [RPN-55 SD](https://appshunter.io/ios/app/rpn-55-sd/id1469907917) | 5.0 (8) | $1.99 | Productivity |
| [RLM-15CX](https://appshunter.io/ios/app/rlm-15cx/id1636646608) | 4.3 (13) | Free | Productivity |
| [RPN-34 CE](https://appshunter.io/ios/app/rpn-34-ce/id1448593029) | 5.0 (13) | $1.99 | Productivity |

## More apps by Philip Starner

- [HomeFlik](https://appshunter.io/ios/app/homeflik/id1222118780)
- [Zerkle](https://appshunter.io/ios/app/zerkle/id1555113270)
- [JRPN 15C](https://appshunter.io/ios/app/jrpn-15c/id6484504019)

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

## Related topics

[jrpn 16c](https://appshunter.io/ios/topics/jrpn-16c)

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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 2026-06-10.*