VirtualKim - 6502 Emulator

VirtualKim - 6502 Emulator

Coding like it's meant to be.

29 ratings
16 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 10, 2021
  • July 18, 2026

Features

VirtualKim - 6502 Emulator screenshot #1 for iPhone
VirtualKim - 6502 Emulator screenshot #2 for iPhone
VirtualKim - 6502 Emulator screenshot #3 for iPhone
VirtualKim - 6502 Emulator screenshot #4 for iPhone
VirtualKim - 6502 Emulator screenshot #5 for iPhone
VirtualKim - 6502 Emulator screenshot #6 for iPhone
VirtualKim - 6502 Emulator screenshot #7 for iPhone
iphone
ipad
watch
🖼️Get Icon
Icons↘︎

About

Experience the 6502 microprocessor, the heart of 1970s home computers. This app emulates the 8-bit processor with an assembler and programming puzzles. Learn to code on a minimalist interface and discover how early computing was done.

6502 CPU emulation
Built-in assembler
Programming puzzles
Minimalist UI with LEDs and buttons
Monitor program for memory editing
Debug and run applications
Show original description
+3

What's New in VirtualKim

2.9.6

July 18, 2026

Updated the Apple Watch companion app.

1

In-App Purchases

$0.99

Buy Me a Coffee

Keep your developer caffeinated!

User reviews

Works on Mac

This simulator appears to work great on my M3 MacBook Air. Nice emulator!

Great app

I want to start by thanking John Kennedy for making this app, he put probably countless hours into making an educational tool. Not only that but he made it completely free so thank you! The app is a great representation of some old computers and it really gives you a sense of what it would be like to use them back when they came out. My only gripe is on my 14 pro it does seem to heat up my phone a bit on the kim simulator, I haven’t tried any other modes. Regardless I absolutely love the app and again thank you John!
Show more

A Brilliant Tribute to Chuck Peddle, Jim Butterfield, and Steve Wozniak!

I absolutely love this app. The description is hilarious and the manual (Readme.txt) is a fun read and a fantastic asset. As an “80’s kid” whose first 6502 experience was the Atari 2600, it was really fun to learn to use the legendary KIM-1. Lunar Lander is a blast on the keypad UI!

The only issue I encountered was with the terminal interface. While the vintage-style keyboard layout looks awesome, I found it difficult to use for any nontrivial typing. I also wished for system keyboard features and support for landscape mode. Perhaps this is as it should be, as I find it equally difficult to type on vintage keyboards from the '70s and '80s.

In any case, I don’t want to look a gift horse in the mouth, as this app is packed with a ton of great retro-computing functionality for ZERO COST. As a developer myself, I know the dedication and labor it takes to produce an app like this—I developed WOZNIAC-1 to address the issues I had with the VK terminal UI, and that has taken as much effort as my previous full-time job. Many thanks to John for putting in the effort to create this!
Show more

A Brilliant Tribute to Chuck Peddle, Jim Butterfield, and Steve Wozniak!

I absolutely love this app. The description is hilarious and the manual (Readme.txt) is a fun read and a fantastic asset. As an “80’s kid” whose first 6502 experience was the Atari 2600, it was really fun to learn to use the legendary KIM-1. Lunar Lander is a blast on the keypad UI!

The only issue I encountered was with the terminal interface. While the vintage-style keyboard layout looks awesome, I found it difficult to use for any nontrivial typing. I also wished for system keyboard features and support for landscape mode. Perhaps this is as it should be, as I find it equally difficult to type on vintage keyboards from the '70s and '80s.

In any case, I don’t want to look a gift horse in the mouth, as this app is packed with a ton of great retro-computing functionality for ZERO COST. As a developer myself, I know the dedication and labor it takes to produce an app like this—I developed WOZNIAC-1 to address the issues I had with the VK terminal UI, and that has taken as much effort as my previous full-time job. Many thanks to John for putting in the effort to create this!
Show more

Wow this is great!

I’ve had this around for a very long time, but I must have seen something about the Kim and revisited this app - wow, this is awesome!

You can revisit the glory days and actually program and run this to see what it was like to be on a computer back then.

I can only imagine how crazy it must have been to play lunar lander in the 1970s…very awesome!
Show more

Developer apps

FAQ

What is VirtualKim?

VirtualKim is an educational app that emulates the 6502 microprocessor, a key component in 1970s home computers. It includes an assembler and programming puzzles to help users understand how early computing worked.

What programming languages can I use with VirtualKim?

VirtualKim primarily focuses on assembler programming. While it doesn't directly support languages like BASIC or FORTH, users can explore these possibilities through the emulation environment.

Does VirtualKim have ads?

No, VirtualKim does not contain advertisements. It is a free application with optional in-app purchases.

What devices is VirtualKim available on?

VirtualKim is available for iPhone and iPad devices, allowing users to learn and experiment with 6502 emulation on their Apple mobile devices.

How often is VirtualKim updated?

The latest version of VirtualKim is 2.4, and it was last updated on March 25, 2026. This indicates a commitment to ongoing development and improvements.

What is the age rating for VirtualKim?

VirtualKim has an age rating of 4+, making it suitable for a wide range of users interested in learning about historical computing and programming.

Does VirtualKim offer certifications for learning?

VirtualKim is designed as a learning tool for understanding 6502 assembly and historical computing. It does not currently offer formal certifications for completing its programming puzzles or educational content.

How does VirtualKim help track learning progress?

VirtualKim provides programming puzzles and a functional emulation environment. Progress is tracked by the user's ability to solve these puzzles and successfully write and debug code within the emulator.