# my16c — Voyager 16C Microcode Emulator

> Cycle-accurate emulation of the 16C Voyager programmer's calculator. (iPhone/iPad app by Miroslav Perovic.)

- Source: https://appshunter.io/ios/app/my16c/id6762121583 (this page in markdown: same URL + `.md`)
- Developer: [Miroslav Perovic](https://appshunter.io/developer/400748424)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 8 MB
- Languages: American English
- Released: 2026-04-29
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/my16c/id6762121583/reviews.md

## What is my16c?

The programmer's calculator that defined an era — now in your pocket.

my16C brings the legendary 16C Voyager series programmer's calculator back to life with cycle-accurate emulation running the original microcode. Every keystroke, every display flicker, every RPN operation — faithfully reproduced.

WHY PROGRAMMERS LOVE THE 16C
The 16C wasn't just a calculator — it was the essential tool for every serious programmer and computer engineer in the 1980s. Its unique combination of base conversions, bit manipulation, and RPN logic made it indispensable. Decades later, it remains unmatched.

FEATURES

• Cycle-accurate emulation — runs the original Voyager microcode, not a simulation
• Full base conversion — HEX, DEC, OCT, and BIN at the press of a key
• Bit operations — shifts, rotates, AND, OR, XOR, NOT, 1's and 2's complement
• RPN entry — the efficient Reverse Polish Notation stack system
• Programmable — write, store, and run programs just like the original
• Authentic 7-segment LCD display with all original annunciators
• Word size control (WSIZE) — work with 8, 16, 32, or 64-bit integers
• Floating point mode for standard calculations
• Unsigned and signed arithmetic modes

BUILT FOR TODAY

• iCloud sync — your calculator state follows you across devices
• Native on iPhone and Mac — landscape optimized on iOS, resizable window on macOS
• Full keyboard support on Mac — type numbers and operators directly
• Dark interface faithful to the original Voyager design
• Built-in Owner's Manual for quick reference

TRY BEFORE YOU BUY

my16C includes a free trial period so you can experience the full calculator before purchasing. A single one-time purchase unlocks the app forever — no subscriptions.

Whether you're a software engineer debugging hex values, a retro computing enthusiast, or someone who remembers the original on their desk — my16C is the most authentic way to use the legendary 16C today.

## Key features

- Cycle-accurate emulation
- Full base conversion (HEX, DEC, OCT, BIN)
- Bit operations
- RPN entry
- Programmable
- Authentic LCD display
- Word size control

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock Full App | $9.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/my16c/id6762121583/reviews.md

### 3/5 — Very nice if you have Tahoe

*2026-05-19*

Unfortunately I’m not going to upgrade my regular computer to Tahoe for this app - Tahoe has too many other issues, particularly from a developer perspective. Also, I have a separate numeric keypad connected to the computer (a KisNT KN 34) and this calculator doesn’t seem to receive keystrokes from it

## Frequently asked questions about my16c

### What is my16c?

my16c is a mobile application that provides a cycle-accurate emulation of the legendary 16C Voyager series programmer's calculator. It faithfully reproduces every aspect of the original hardware and its functionality.

### What kind of calculations can I do with my16c?

my16c supports full base conversions between HEX, DEC, OCT, and BIN. It also offers extensive bit operations like shifts, rotates, AND, OR, XOR, NOT, and complements, along with standard floating-point calculations.

### Does my16c support RPN?

Yes, my16c fully supports RPN (Reverse Polish Notation) entry, which is the efficient stack-based system that the original 16C calculator was known for.

### Can I program my16c?

Absolutely. my16c allows you to write, store, and run programs just like you would on the original 16C calculator, making it a powerful tool for complex tasks.

### What devices does my16c support?

my16c is designed to run natively on iPhone, iPad, and Mac devices. It is landscape optimized on iOS and features a resizable window on macOS.

### How is my16c priced?

my16c offers a free trial period, allowing you to experience its full functionality before making a purchase. A single, one-time purchase unlocks the app permanently, with no subscriptions required.

### Does my16c have ads?

No, my16c does not contain advertisements. The app is free to download and use during its trial period, with a one-time purchase to unlock its full features.

### How often is my16c updated?

The latest version of my16c is 1.0.3, which was last updated on August 17, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support.

## Version history (last 3 releases)

### 1.0.3 — 2026-08-17

Self-tests are here!

This update brings the calculator's built-in diagnostic tests to life, working exactly as on the original hardware:

• Self-test — hold × and ON: the ROM runs its full diagnostic and finishes with the famous all-segments display
• Keyboard test — hold ÷ and ON, then press every key in sequence
• Continuous self-test — hold + and ON for the endless diagnostic loop

All three are also available from the Calculator menu on Mac.

Under the hood:
• More accurate emulation of the display driver hardware, verified against a real calculator
• The display now shows the complete set of annunciators, positioned to match the original LCD glass
• Improved handling of simultaneous key presses

Thanks to the community at the Museum of HP Calculators forum for the sharp observations that led to this update!

### 1.0.2 — 2026-05-02

You can now switch between period and comma as the decimal separator, just like on the original calculator. Turn off the calculator, press and hold the decimal point key, then tap ON. The radix mark and digit separator will swap instantly.

Also fixed: display annunciator labels now match the original HP hardware.

### 1.0 — 2026-04-29

No release notes.

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## More apps by Miroslav Perovic

- [my41CX](https://appshunter.io/ios/app/my41cx/id979041950)
- [my59](https://appshunter.io/ios/app/my59/id6759532452)
- [my11c](https://appshunter.io/ios/app/my11c/id6762810891)
- [Hole in the Floor](https://appshunter.io/ios/app/hole-in-the-floor/id6767888842)
- [myPreferans](https://appshunter.io/ios/app/mypreferans/id6789721866)

All apps by Miroslav Perovic: https://appshunter.io/developer/400748424

## Related topics

[mirocode](https://appshunter.io/ios/topics/mirocode)

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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 2026-08-21.*