One Line Draw
Draw a single continuous line to solve beautiful geometric puzzles.
In development
HELLO, I'M
Đặng Đình Dương (Alex Dương)
Full-stack Developer · Product Builder · Mobile App Creator
I build useful, user-focused web and mobile products that solve real problems, create value, and bring great experiences to users.
Ideas into thoughtful digital experiences.
12+years building
software
software
01 / ABOUT
About Me
I'm Đặng Đình Dương (Alex Dương), a full-stack developer and product builder passionate about turning ideas into real, high-quality digital products — from web platforms to mobile apps. I enjoy building, iterating, and continuously improving products that are useful, simple, and delightful.
Full-stack Development
End-to-end, from idea to product
Product Building
Design · Build · Iterate · Grow
Mobile App Creation
Thoughtful mobile experiences & games
02 / SELECTED WORK
Featured Projects
A selection of products I've built, focusing on education, creativity, and everyday utility.
Explore my workTiengAnhVui
A friendly English learning platform for children, with interactive lessons and practice.
PuzzleJot
Printable word puzzles and brain games made for fun, focus, and a little daily challenge.
PetPass
Smart QR-powered pet profiles that help people reconnect with their lost pets.
EasyChinese
Learn Chinese with structured lessons, useful vocabulary, and practical exercises.
TiengNhatOnline
A structured way to learn Japanese through lessons, vocabulary, and practice.
03 / TOOLS & TECHNOLOGY
Tech Stack
The technologies I use to turn ideas into working products.
.NET.NET
C#C#
SQLSQL Server
NNext.js
⚛React
TSTypeScript
FFlutter
✦Flame
CFCloudflare
◇Git
04 / WHAT'S NEXT
Mobile Apps
Three relaxing puzzle games I'm currently building for Android, with iOS in mind.
Coming soonWater Sort
Pour, sort, and relax. Get every tube down to one color.
In development
Unblock Car
Slide cars around the grid and clear a way for the red car.
In development
05 / CONTACT
Get in Touch
Have a project idea, a collaboration, or just want to say hello? I'd love to hear from you.