Most app builders ship a pile of themes. A theme encodes results. A design system encodes rules, so it still works on the combinations nobody anticipated.
Here's ours, layer by layer:
hellomathieup.medium.com/we-formalize...
We formalized a real design system inside an app builder. Here’s the architecture
A good-looking app builder isn’t a pile of themes. It’s a formalized design system, and that’s an architecture decision, not a cosmetic…