About Kongwei Ying
I manage, design and engineer deeply useful apps and AI agents for people and businesses.
I do this through my professional and personal experience as an entrepreneur, product manager, designer, marketer, and software engineer.
I have an interest in metaphysics, meditation, history, psychology, biomechanics, biology.
My experience
- I created, designed and marketed Natural Scientific Calculator for iOS and Android which got over 1 million downloads organically on a $150 marketing budget.
- I worked at Google as a Marketing Manager in SMB Marketing.
- I worked at Microsoft as a Software Engineer in the Office team.
- I later received offers to work as product manager and software engineer from various big tech companies. I declined these offers to pursue my own more well-rounded path of development outside of the pigeonholing associated with traditional roles.
- I also ran a small software consultancy called Stultus Studios, that built apps for various businesses and startups, where I worked with my university friends.
My current focus
Software
- Kairos Life Suite - A suite of apps for a deeply considered life
- Kairos Calendar - A long term calendar for connecting long term projects to the short term
- Kairos Atlas - A mapping app for intuitively organising both long and short trips
- Kairos Filtrum - A browser extension that precisely blocks low quality content in browsers
- Kairos Polyglossa - An app that partially translates foreign language content for language learners
- Natural UI - 3D photorealistic UI using physically based rendering and Three.js
- Natural Scientific Calculator 2 - A second version of a scientific calculator I created many years ago
Hardware
- Kairos Inkboard - A 3D virtualised keyboard that's intuitive and ergonomic to use
- Kairos Paprus - A natural and intuitive laptop for clear and calm creatorship
Apps for clients
I freelance as an all-in-one product manager, designer and software engineer to help people and businesses build their own tools and apps.
I bring my integrated business understanding, design sensitivity and engineering abilities to the table; having an understanding of these areas allows me to go beyond what an ordinary outsourced "dev shop" offers. I'll be able to push back on ideas and contextualise requests in light of business objectives instead of just blindly coding up what's requested.
No cost, I'll give you many free pointers on best practices around building apps, either vibe coded or production grade :)
Where I'm based
I primarily live in Australia, with periods of the year spent in China.
Last updated: June 4, 2026