HXH Studio · Vietnam

Small software, for the things that matter.

An independent product studio founded by Vũ Đăng Công. Our first product is Ember, a private AI companion for your everyday life.

See Ember Contact

One product maker, working with an AI team.

HXH Studio was founded by Vũ Đăng Công. Công is the product maker: choosing problems worth solving, writing the spec, reviewing every screen and every line of copy before it reaches people.

Building, testing and operations are handled by a team of AI agents, with a human review at every important step. That is how a small studio ships a whole product: mobile, web and the care that comes after.

EmberCurrent project

Remember people. Know yourself. Live every day.

The people you love, your journal, money, habits and the questions you ask yourself. All in one warm, private app.

keepember.com
Ember's Home screen with today's date, Keeper AI, journal, reminders and Tarot

“Which payments do I need to chase this week?”

Keeper AI, wherever you ask

Ask in plain words inside Ember, or from ChatGPT and Claude through Ember's secure connector.

ChatGPT asking Ember which payments to follow up on this week and getting an answer

A living page for every person

Birthdays, sizes, important dates, documents. The small details that make someone who they are.

The More info page of a family member in Ember: height, weight, clothing size, cycle

Reminders at the right time

Birthdays, anniversaries, promises. A morning briefing tells you what today holds.

Journal, money, habits

What is yours lives in one place, linked to the right person and the right day.

Know yourself a little better

Tarot, birth chart, Tu Vi, numerology. For reflection, not prediction.

Privacy isn't a setting. It's the foundation.

This is how Ember was built from day one. Your sensitive data stays yours, even when it syncs across devices.

  • End-to-end encryption with a passphrase only you hold.
  • We never sell your data. No ads.
  • Your data is never used to train AI.

How the studio builds

  1. Private by default

    When a product touches someone's personal life, encryption and control over their data belong in version one.

  2. Fewer products, finished properly

    Focus on a few things and care for every detail, rather than shipping many half-done ones.

  3. Written for real people, in their language

    Plain words, with Vietnamese and many other languages from the start.

  4. Ship, then listen

    User feedback goes straight into the studio's daily work list.

Want to build together, or have feedback on Ember?

Every email gets read. Partnerships, bug reports or just an idea, send it over.

Email the studio