Duolingo’s onboarding: 2 years on
Last year, I wrote about how Duolingo converts freemium users. It was one of my best articles of all time on Medium and was super fun to write. I’ve been meaning to do a re-visit for while now, especially seeing as I have screenshots that date back to 2022. When I found the old screenshots I thought: What. A. Treat. There’s so much that’s changed, and there’s a lot that has stayed. Which indicates
The “dark yellow problem” in design system color palettes
The goal was simple: to define the main colors so that their relative luminances, as defined by WCAG, are close to each other. This way, when designers swap out one status color for another, they are guaranteed by the design system that the color contrast ratio still passes the accessibility requirement. In this design, we don’t want the “in progress” tag to be any more prominent than the “finishe
The worst volume control UI in the world
About “wants”, “cans”, “needs”, and “shoulds”The original reddit post has now hundreds of examples of terrible volume UI, and it keeps growing — a fun exercise/joke, that can strengthen one’s creative muscles and ability to think outside of the box. People have been participating simply for the fun of coming up with the most absurd and weird interactions and interface elements. But there’s definit
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Designing for forgiveness: How to create error-tolerant interfaces
