Products I've designed and shipped over 6+ years, from apps used by millions at 4PLAY to our own games at TAO STUDIO. I design them, and most of the time I build them too.
4PLAY · Product design & build
Formerly KimGBister, GiftBank and 1GB
One product I've designed through every rebrand. It started as a viral social quiz and grew past one million users. I also built its WebView mini-games (Simon Says, Stack Tower, Flappy Bird) on the Game Hub API with a FreeByte token economy, and moved kazan-kazan.com from Framer to Next.js, Supabase and Cloudflare.
kazan-kazan.comTAO STUDIO · Design & engineering
A couples reaction game for iOS, built around a 3D body map with haptic feedback and real-time sync between partners.
App StoreTAO STUDIO · Design & engineering
A famous-faces quiz game about historical figures, live on the App Store and Google Play in five languages with in-app purchases.
Website4PLAY · Product design (UI/UX)
A casual mobile game that reached more than 250,000 players.
4PLAY · Product design (UI/UX)
A/B tests on push and SMS copy measured by CTR and conversion, dunning flows, WhatsApp campaigns and holiday promotions, with nudge theory applied to campaign and onboarding UX.
UI explorations, interface details and visual experiments. I post new shots on Layers.
I take products from Figma to production myself with SwiftUI, React and Next.js, so nothing gets lost in handoff.
Gamification, nudges and A/B tests are how I make products people come back to, and how I prove it with numbers.
I work with Claude Code, Cursor and MCP agents every day to prototype faster and ship more with a small team.
I'm open to Product Designer and Design Engineer roles. The quickest way to reach me is email.