Hong Kong · Mobile product studio
We build mobile products, end to end.
Haoyun Studio is a product team in Hong Kong. We design, build, publish, and grow our own apps in-house — and our first, Dual Web Messenger, is already live on the App Store.
What we do
One team, the whole product.
We don't hand the pieces to other people. From the first idea to a live App Store listing — and the growth that follows — it's designed, built, and run by the same team, in-house.
Self-developed & published
Concept, UI, engineering, store launch, and growth — we own the full chain ourselves, with no outsourced links in between.
Built around real needs
We make products that solve everyday problems, then sharpen them with real usage and honest data rather than guesswork.
Private & made to keep
Calm, dependable software with privacy built in from the first decision — the kind people leave on their home screen.
On the App Store
Our first app is live. More are on the way.
Dual Web Messenger lets you run two messaging accounts on one iPhone — private, synced in real time, and locked behind your own key. It's the first of a growing line of products from the studio.
Dual Web MessengerSocial Networking · iOS 17+ · Free
Download on theApp Store
What's next
This is the first of many.
Designed in-house
Every product is shaped end to end by the same team — no templates, no shortcuts, no outsourced core.
Privacy-first
We build software people can trust with the things that matter, and treat that trust as the product.
Built to grow
We treat launch as a beginning: real feedback and data guide every release and what we make next.
Get in touch
Building something, or want to follow what we ship next?
We'd love to hear from you — about the app, a partnership, or the products we're working on.
Made in Hong Kong by Haoyun Studio.