Crafting mobile products that millions rely on every day.
MUSJOY Limited is a Hong Kong–based mobile internet company. We design and ship iOS and Android applications across AI, productivity, photo, video and lifestyle categories — for users in over a hundred markets.
Building apps that turn everyday tasks into delightful experiences.
Our portfolio spans AI assistants, document tools, photo and video creation, voice technology and lifestyle utilities — all engineered for performance, polish and global reach.
Mobile App Development
Native iOS and Android applications crafted with modern engineering practices — built for performance, stability and a seamless user experience at scale.
AI-Powered Products
From AI chat assistants to intelligent imaging and document tools, we integrate cutting-edge models to make everyday tasks faster, smarter and more useful.
Global Operations
Multi-language localization, regional content tuning and dedicated user support — our products serve users across North America, Europe and Asia.
A portfolio shaped by what users actually need.
Across AI, imaging, wellness and productivity — every app we ship is refined through years of user feedback, with a relentless focus on quality and craft.
AI Chat & Assistants
Conversational AI experiences powered by modern large language models — characters, companions, and assistants that listen and respond.
Face & Photo AI
Real-time facial recognition, age progression, beauty analysis and creative photo effects — putting advanced computer vision into everyday cameras.
Sleep & Wellness
Sleep tracking, smart alarms, ambient soundscapes and dream journaling — building gentler routines for better rest and mornings.
Voice & Audio
Voice recording, transcription and audio creation tools designed to make capturing and sharing sound effortless on mobile.
Document Tools
PDF scanning, OCR, signing and management — turning a phone into a complete document workflow for everyday work.
Translation & OCR
Real-time text and photo translation across many language pairs — bridging language barriers wherever users travel or read.
Video Creation
Mobile video editing, templates and music sync — making short-form content creation accessible on every device.
Lifestyle Apps
Personalization, fortune, countdowns and everyday utility apps — small, focused tools that fit naturally into daily life.
Apps available now on the App Store.
Lunio: AI Companion & Friend
An AI companion app where you chat with virtual characters who listen, remember and respond with warmth — powered by advanced large language models, with voice input, character memory and built-in emotional safeguards.
Download on the App Store
Look Like — Celebrity Look-Alike
Take a photo and discover your celebrity match using real facial recognition technology. Includes AI face scanning, age progression, future-baby predictor, beauty analysis and more — fun, fast and shared by users worldwide.
Download on the App Store
ASleeper — Sound & Music
Sleep music, smart alarms, dream memos and detailed sleep analysis in one focused app. Carefully selected ambient sounds and gentle wake-up modes to help users fall asleep faster and wake up refreshed.
Download on the App StoreReal face technology, packaged as everyday fun.
From celebrity match to age progression and future-baby prediction — Look Like puts professional-grade facial recognition into a delightful experience that has reached users in over a hundred countries.
A calmer night, a better morning.
ASleeper combines a smart alarm, curated sleep sounds, dream journaling and clear sleep analysis — designed to help users build healthier sleep habits, one night at a time.
A decade of building for global users.
Principles that shape every product we ship.
User-First Design
Every feature begins with a real user need. We listen to feedback, iterate quickly, and treat product quality as non-negotiable.
Engineering Excellence
Skilled, experienced engineers who take pride in clean code, robust architecture and shipping reliable software at scale.
Innovation & Agility
We move fast, embrace new technology and stay curious — always looking for better ways to solve problems for our users.
Headquartered in the heart of Tsim Sha Tsui.
A registered Hong Kong company, operating from one of the city’s most connected commercial districts.
MUSJOY HK
Tsim Sha Tsui · Kowloon · Hong Kong SAR
Get in touch
For business, partnership or product enquiries.