SuppCo
2024–presentA supplement quality score that explains itself.
TrustScore on every product card and search result. Joined at seed; acquired by Function Health in 2026.
App Store: 4.8★ from 31K ratings
Design Lead
Viktor Engborg · Design Lead at Function Health
Founding and lead product designer for consumer health apps.
I lead design for SuppCo, now part of Function Health. Before that I led design at Mindbloom and Levels, and was the first designer at Zero, Topology, and FitStar. I also build my own products, through my studio Dark Thirty Labs.
- First designer at
- Zero, Topology, FitStar
- Best-known design
- Zero’s fasting zones, its #1 driver of Pro upgrades
- On my own time
- An iOS app, a logo studio, and a book
- Also
- Turning an 1894 Victorian into a small hotel
- Outer · Levels glucose ring
- Middle · Zero fasting timer
- Inner · SuppCo StackScore
Experience
Mindbloom
2024AI-assisted intention setting and voice journaling for at-home ketamine therapy.
+23% intention quality. Shipped in 8 weeks by a team of three.
Design Lead
Levels
2022–2024A glucose home screen beginners can read without knowing the numbers.
Shipped the new home screen and design system. Later ran all design alone.
Design Lead
Zero
2018–2022Turned a countdown timer into a subscription app built around fasting zones.
Fasting zones became the #1 driver of Pro upgrades.
800K people fasting nightly by 2020 · App Store: 4.8★ from 445K ratings
Founding designer, then Head of Design
Earlier roles
- Dec 2016–Nov 2018Topology EyewearLead Product DesignerFounding designer for custom glasses fitted by a phone face scan of 20,000+ points, with AR try-on.
- Sep 2014–Dec 2016if(we)Senior / Lead Product DesignerTagged and hi5, social apps with hundreds of millions of registered members.
- Feb 2013–Sep 2014FitStarProduct DesignerFounding designer. App Store Best of 2013 and Editors’ Choice. Acquired by Fitbit in 2015.
- Mar 2012–Feb 2013BadooProduct DesignerMobile and web for a dating app with more than 150 million members.
Before that, digital agencies in Sweden. Full history on LinkedIn
How I work
I still research, sketch in Figma, and test with people. What changed is where it ends: I now build what I design with AI coding agents, so I test real software, not mockups. I built this site too.
When you need your first designer
I’ve been the first designer three times: Zero, Topology, and FitStar. Zero’s CEO had worked with me at FitStar and brought me in. At Zero, design grew from me to five people.
Building ZeroWhen you need a design lead on an existing team
I’ve built design systems at Zero and Levels. At Levels, I was the only designer for the whole company, working directly with the CEO.
Running design alone at LevelsWhen your product is hard to explain
Health data is easy to show and hard to act on. I design the view that makes it usable: SuppCo’s TrustScore, the Levels glucose ring, Zero’s fasting zones.
Making glucose data readableWhen you need to ship
I take a design all the way to working software. At Mindbloom, three of us shipped two AI flows in eight weeks. I built Movable on my own.
Side projects
Products I make on my own time, through my studio, Dark Thirty Labs .
A daily movement app for adults over 50.
Design, code, exercise videos, voice, and App Store release, on my own.
A logo studio: founders sketch with a machine for an hour, then I finish the mark.
The service, the site, the sketch engine, and the finish on every mark.
From Sweden.
Based in Northern California.
About me
I grew up in Sweden and started out in digital agencies there. Since then, I’ve mostly worked on early product teams, often as the first designer. Health keeps pulling me back: when Zero came up, I had just started fasting myself.
My wife and I also run House Of, three vacation homes in California, and we’re turning an 1894 Victorian into a small hotel. Running a business keeps me close to what happens after launch.
The best design decisions happen while building, not before.