⚠️ Important Notice

Nearly two years after the debut of WOZNIAC‑1 on the App Store, WOZNIAC‑1 and WOZNIAC‑68 were removed from the App Store by Apple on April 10, 2026 under Guideline 5.2.1. This issue began last September, when I submitted an update timed with the release of iOS 26 and macOS 26. That update included compatibility fixes for the new operating systems, several small interface improvements, and new Mac Catalyst variants to support Intel‑based Macs. During the review of that update, Apple raised new concerns but did not identify any specific text, asset, or metadata element that required modification.

Guideline 5.2.1 relates to the use of third‑party intellectual property. On December 22, 2025, App Review stated that the apps created a “misleading association with Apple,” but no specific text, asset, or metadata element was identified. The apps contain original code and assets, along with public‑domain and open‑source materials used under appropriate licenses, and both apps include explicit disclaimers to avoid any possibility of confusion.

Over the months that followed, I repeatedly asked Apple to identify the specific issue so I could address it. No actionable detail was ever provided, and the apps were ultimately removed under Guideline 5.2.1 without clarification about what element Apple believes is non‑compliant. I have now escalated the matter through the appropriate channels and am waiting for written clarification so I can resolve the issue and restore the apps.

If you already downloaded either app, your copy will continue to work normally. Nothing has changed in the versions you have installed, and your purchase remains fully valid. You can also reinstall the apps from your App Store purchase history at any time. The removal affects only the App Store listing, not the functionality of the apps on your device. I will post updates as soon as Apple provides the information needed to move forward.

Frequently Asked Questions

Will the apps I already installed stop working?

No. If you previously downloaded either app, it will continue to work normally on your device.

Can I reinstall the apps?

Yes. If you downloaded them before removal, you can reinstall them from your App Store purchase history.

Did something change in the apps?

No. The versions you have installed are unchanged. The removal affects only the App Store listing, not the functionality of the apps on your device.

When will the apps return to the App Store?

I am waiting for written clarification from Apple identifying the specific issue. As soon as Apple provides actionable information, I will address it and submit the apps for reinstatement.

Software from the Green Dome

The following projects are currently underway at the Green Dome.

Be seeing you...

Apps for Apple Silicon:

WOZNIAC-1

WOZNIAC-1 transforms your iPhone, iPad, Apple Silicon Mac, or even your Apple Vision Pro into a supercharged vintage microcomputer compatible with the iconic Apple-1 computer and its modern replicas. It features comprehensive MOS 6502 and WDC 65C02 microprocessor support, 56 KiB of RAM, integer BASIC, and the KRUSADER assembly programming environment, all built-in.

Visit the WOZNIAC-1 Downloads Page to jump into the world of vintage computing.

WOZNIAC-68

Explore the alternate microprocessor option in the original Apple-1 schematics with WOZNIAC-68. Built on the same foundation as WOZNIAC-1, it features an all-new M6800 microprocessor implementation and 56 KiB of RAM, complete with Wozmon and Micro-BASIC built-in and ready to use!

Discover the WOZNIAC-68 Downloads Page and dive into the world of vintage computing.

Open Source:

Projects on GitHub

New projects will be posted as they become available.

Old Stuff...

The following projects are generally no longer under active development. Any software available below is free.

Mac OS X (10.5 and earlier)

User Manager

(Retired)

The "power user's" alternative to the Accounts pane in System Preferences.

Son of Fugu

(Retired)

An version of the Fugu Secure FTP client for Mac OS X featuring UI enhancements and more flexible remote editing.

XDP Controller

(Retired)

A reimplementation of 4kControl for Mac OS X.

Cyber Parallel Device Driver

(Retired)

Device driver for the SIIG Cyber Parallel PCI card and ParallelPort family for IOKit.

gPhoto GUI

(Retired)

A Cocoa frontend to libgphoto2. Originally developed for Mac OS X Server 1.0, development ceased when Apple shipped ImageCapture. May be revived in the future as an OPENSTEP and/or GNUSTEP application.

Atari 5200

TETRIS 5200

(On Hold)

A Tetris clone for the Super System, written in C.

PAMix

(On Hold)

A multithreaded executive, written in C, originally targeting the Atari 5200 (8-bit 6502), which has been ported to various 32/64-bit RISC systems with architectures including Alpha, ARMv7/v8, Intel 80860, Motorola 88000, MIPS, SPARC64, and RISC-V.