I'm Tan Chong How, based in Penang, Malaysia. I build web and mobile interfaces, and I ship my own apps. My latest, KSSR English Go!, is live on the App Store.
UASA English practice for Malaysian primary pupils, Tahun 4–6. Five papers in real exam format, a dog-ear bookmark you fold like a page, and a 10-question Quick mode. In English and Bahasa Melayu, with no ads, no accounts and no data collection.
A pixel-accurate eyedropper for photos. Zoom up to 50×, drag a loupe onto one pixel, and save it with its HEX, RGB and nearest Pantone match.
A React Native CLI app that browses GitHub repositories. I upgraded it from React Native 0.68 to 0.75 and moved navigation to native-stack.
View sourceAvailable for full-time frontend roles, and for freelance or subcontract work from software teams.
Clean, typed UI in TypeScript, connected to your REST APIs, styled with Tailwind or Sass.
React Native CLI apps for iOS and Android, including in-app purchases, iOS build issues and version upgrades.
I've taken my own app through App Review, store listings, screenshots and release.
Built an education app for iOS, Android and web, including in-app purchases, with code review on every change.
Maintained more than 8 WordPress and OpenCart websites, fixing CSS issues and handling SEO.
Approved after two rounds of App Review feedback.
A native port in Kotlin and Jetpack Compose for Google Play.
Final polish before its App Store launch.
I like simple, well-made software. Most of my projects start with a small problem I've seen up close: a pupil practising for an exam, or someone who needs the exact colour of one pixel.
I focus on the front end and I'm honest about where my skills end. I've worked with Node.js, Express and PostgreSQL, and I'm learning more of the back end, but frontend and mobile are what I do best.
English, Mandarin
Hiring for a frontend role, or need help on a React or React Native project? Email is the quickest way to reach me.