| Feature | Realtime Colors | SeedFlip |
|---|---|---|
| Live design preview | ✓ | ✓ |
| Custom color input | ✓ | Pro |
| Font pairing | ✗ | ✓ |
| Shadow system | ✗ | ✓ |
| Border radius system | ✗ | ✓ |
| 100+ curated design seeds | ✗ | ✓ |
| CSS Variables export | ✓ | Free |
| Tailwind Config export | ✗ | Pro |
| shadcn/ui theme export | ✗ | Pro |
| AI Prompt export | ✗ | Pro |
| IDE rule files (CLAUDE.md, .cursorrules) | ✗ | Pro |
| Category locking (remix) | ✗ | Pro |
| Responsive viewport toggle | ✗ | ✓ |
| Price | Free | Free + $19/mo Pro |
What Realtime Colors Does Well
Realtime Colors solves a specific problem elegantly: you have a brand color and you want to see how it looks applied to a real interface before committing. The single-template preview is clean and the color input is direct. For validating an existing color choice, it's genuinely useful.
What Realtime Colors Doesn't Do
Realtime Colors is a color validation tool, not a design system generator. It has one template, one layout, and no typography system. You bring the colors — it shows you how they look. There's no font pairing, no shadow system, no spacing or radius decisions. And there's no export that translates into production code you can paste into a project.
Why Developers Switch
SeedFlip starts from the other direction. Instead of bringing your own colors and seeing how they look, you explore complete aesthetic systems until something fits your project. Every seed is an internally consistent design decision — the fonts were chosen to work with the palette, the shadows were calibrated to the atmosphere, the radius values fit the overall personality. When something clicks, the CSS Variables export is ready to paste. The design work is done before you start building.