Hi, I'm James, a product designer who believes good design starts with a conversation.

User research
Usability testing
Design systems
AI-assisted prototyping
Sketching
Figma
Adobe Creative Suite
After Effects
Somnium
Sleep tracking that turns your own patterns into small nightly challenges.
Somnium nightly score breakdown
Somnium weekly sleep graph
Somnium analytics screen
Display & title
Bold
DM Sans
Body & UI
Regular
DM Sans
Somnium room screen
Somnium challenges screen
Product
Research
Mobile

A sleep app for college students. We interviewed fifteen of them, ranked roughly forty features on feasibility against impact, and landed on a loop that ends in an action rather than a chart: every night's score produces one small challenge, and completing it buys something you can see.

Cura
One brand a day, judged on facts.
Cura brand onboarding
Cura Kapital brand story
Cura aesthetic onboarding
Display & title
Bold
Satoshi
Cura daily brand
Cura product detail
Body & UI
Regular
Satoshi
Cura Guidi brand story
Product
Research
Built with Claude Code

A shopping app with no feed. Cura shows one brand a day and judges it on facts (price, materials, reviews from every source), so taste gets built rather than sold. Sole designer over three months, from interviews to a working build.

Wheelee
Physical buttons that strap to a steering wheel spoke, so drivers never look away from the road.
Wheelee controller, front view
Driving summary Motion lock
Final unit, top
Final unit, angled
Strap fitted
Research
Industrial
Human factors

Four physical buttons that strap to a steering wheel spoke, so drivers run their infotainment without looking away from the road. Researcher on a team of five. Testing killed our dashboard dock after eight of thirteen testers called it too large, so the product moved onto the wheel.

Hello Polo
An AI chat tool recommending manageable tasks to help creatives of color prevent burnout.
Polo introduces itself
Polo character illustrations
Recommended tasks
Voice
Polo asks, never nags. Tasks arrive one at a time.
Task progress
Hello Polo design system
Product
Content design
Visual design

An AI chat tool that recommends manageable tasks to help creatives of color prevent burnout. Four weeks with BRIDGEGOOD. I owned the design system, the visual direction, and every word Polo says.

© James Cahayag