Hong Kong Tech Studio
We build digital
products that matter
Codex 369 Limited is a technology studio specialising in crafting innovative software solutions — from concept to launch.
Learn moreAbout
A studio built for builders
Codex 369 Limited is a Hong Kong-based technology studio. We partner with founders and organisations to design, engineer, and ship digital products — web platforms, mobile applications, and the infrastructure that powers them.
Engineering Excellence
We write clean, maintainable code with modern technologies and rigorous engineering practices.
Product Thinking
Every project starts with a deep understanding of the problem, the users, and the market opportunity.
Speed to Market
Lean processes and focused execution mean your product moves from idea to live faster.
Our Projects
What we have been building
A selection of products we have designed, engineered, and shipped.
UsMeWe
Social platform reimagined
A next-generation social platform designed to foster authentic human connection. We led the end-to-end product development, from initial architecture through to a scalable, production-ready launch.
BriefTube
YouTube summaries as audio on Telegram
An AI-powered service that automatically summarises new YouTube videos from your subscriptions and delivers natural-sounding audio briefs straight to Telegram. Open-source, self-hostable, and built for people who have more channels than time.
PassReal
AI images. Undetectable.
PassReal removes AI fingerprints from generated images using advanced sensor simulation, frequency analysis, and diffusion reconstruction. Defeat 12+ AI detectors while maintaining perfect visual quality in under 30 seconds.
More Coming Soon
New ventures in the pipeline
We are actively building new products across AI, fintech, and digital infrastructure. Stay tuned for upcoming announcements.
Contact
Get in touch
Whether you have a project in mind or simply want to learn more about what we do, we would love to hear from you.
Office
Codex 369 LimitedHong Kong