BillionX

Where Billion Meets Billion.

From AI to lifestyle, BillionX builds and publishes high-performance digital products that turn bold ideas into useful, everyday experiences for a global audience.

Explore our apps Work with BillionX

Family map with the people who share their location, their last update and battery level

DupX home: 240 GB ready to clean, sorted into similar photos, duplicates, screenshots and chat photos

Space to clean: 240 GB, split by videos, similar photos, duplicates, screenshots and chat photos

Apps in our portfolio

Platforms: iOS and Android

4.8★

Decor AI on the App Store

Hong Kong

Headquarters

Our vision

Connecting bold ideas with a billion global users.

We build intuitive AI, utility and productivity products for modern life. BillionX combines product thinking, data intelligence, engineering and creative strategy to turn ambitious ideas into useful experiences.

Full product lifecycle

One team from first idea to global release.

BillionX brings engineering, intelligence, design and publishing into one operating loop. That continuity lets every product move with more clarity and learn faster.

Product engineering

From the first line of code to a product architecture built for reliable performance and continuous iteration.

Data & AI

Intelligence applied where it makes the experience more useful, with feedback guiding each product decision.

Global publishing

Creative strategy, distribution and optimization designed to help digital products reach users across markets.

Portfolio

Our apps

Useful apps for everyday life, on iOS and Android.

Decor AI

AI interior design

4.8★ App Store rating

Take a photo of any room, pick a style and see a fresh, high-definition design concept in seconds, inside and out.

iPhone and iPadiOS 17 or later

App Store View Decor AI

Original living room photo used as the Decor AI redesign input

Input photo AI concept

Family Locator

Family safety

Available on Google Play

Keeps families connected on one clear map, with safety tools that work only between people who have agreed to share.

AndroidSharing only with consent

Google Play View Family Locator

Location history of one person on a chosen day, with the recorded points

SOS alert: Alex requested help, with their last known location

DupX

Storage cleaner

500+ downloads on Google Play

DupX scans your gallery and contacts, groups the clutter and lets you clean it up in a few taps. Your photos, videos and contacts are checked on your phone and never uploaded.

Android20 languagesNo account needed

Google Play View DupX

Duplicate photos grouped in pairs, with a Best pick in each group

Video compression: 248 MB down to 58 MB at Medium quality

Voice Translator

Voice translator

Coming soon to Google Play

Voice Translator turns your phone into a pocket interpreter: speak and read your words translated as live subtitles, or hear the translation in your headphones. Translate typed text and photos too.

Android20 languagesWorks with or without an account

View Voice Translator

Camera translator: a shop sign reading Carnicería translated to Butcher, with Spanish and English language buttons

Real-time voice translation: a conversation between English and Spanish shown as live subtitles

A translated phrase: Hi! Could you tell me how to get to the train station? shown with its Spanish translation

Authenticator

2FA authenticator

Coming soon to Google Play

Authenticator keeps the two-factor codes for all your accounts in one place on your phone, encrypted and locked behind your PIN, fingerprint or face. Passwords and a private browser sit right next to your codes.

Android20 languagesEnd-to-end encrypted sync (Premium)

View Authenticator

Passwords list with strength labels, an autofill prompt and a data-leak warning

Codes list with 6-digit verification codes and a 30-second countdown ring

A code card: the account Coinbay with the code 375 902 and a countdown ring at 21 seconds

Smart TV Remote

TV remote

Coming soon to Google Play

Smart TV Remote turns your phone into a remote control for your smart TV. Connect over Wi-Fi, pair with the code or prompt on your TV screen and control it from the couch.

Android20 languagesWorks over Wi-Fi

View Smart TV Remote

Connect to your TV: your saved TVs and the TVs found on the same Wi-Fi network

Smart TV Remote screen with a directional pad, volume and channel buttons

The remote's directional pad with an OK button in the centre

PDF Reader

PDF reader

Coming soon to Google Play

PDF Reader finds the PDF files on your phone and lists them in one place, together with your Word and text documents. Read a file, then highlight, sign, merge or compress it, right on your phone.

Android20 languagesFiles stay on your phone

View PDF Reader

PDF Reader annotating a PDF page with highlights, a pen mark and text

All apps and their legal pages

What guides every app

Useful by design

Every feature begins with a real human need.

Built to learn

Data and iteration guide better product decisions.

Ready to travel

Created for distribution beyond one market.

The people behind the product

Who we are

Built by people who care about the entire lifecycle.

Our developers, data scientists and creative strategists work as one product team — aligning technical performance with a clear user experience and a global publishing mindset.

Developers

Engineering products for speed, quality and scale.

Data scientists

Turning signals into better product choices.

Creative strategists

Giving each product a clear story and purpose.

Publishing specialists

Preparing products to meet a global audience.

Our Partners

Platform, monetization and distribution ecosystem

Start a conversation

Have an idea worth building?

Tell us what you are working on. We will explore the product, technology and publishing possibilities with you.

Contact BillionX

Email: support@billionx.co
Phone: +852 7090 1644
Hong Kong office: Unit 506, 5/F., New World Tower 1,
18 Queen's Road Central, Central, Hong Kong