Count your system and your screens
Give your current component count and the distinct UI elements you can spot.
DESIGN SYSTEM GAP CHECK
Component Gap
Compares screens against a design system and identifies UI elements that lack reusable components.
- Uses your inputs in a transparent calculation
- Instant result with practical next steps
- No signup required
Planning guidance only. Validate important decisions with customer evidence and your delivery team.
YOUR INPUTS
Build your result
Complete every field. The result updates only when you choose Calculate.
How it works
See your coverage
Component Gap estimates what share of your UI is backed by a reusable component.
Close the highest-impact gaps
Prioritise the elements that repeat across the most screens first.
Continue learning: Who should approve MVP requirements?
Frequently asked questions
What counts as a 'UI element'?
Any distinct interface pattern — a button, card, table row, badge, or form field style — whether or not it's backed by a component today.
Is 100% coverage the goal?
No. Some one-off UI is fine; the score is meant to flag when coverage is low enough that inconsistency and rebuild cost are real risks.
Does this work for a scaling product too?
Yes — the product stage field adjusts how urgently gaps should be prioritised, since coverage debt compounds faster at scale.
How We Compare
| Feature | MVPHub | Storybook | Figma component libraries |
|---|---|---|---|
| Instant coverage estimate | Included | Not included | Not included |
| No setup required | Included | Not included | Limited |
| Manages the actual components | Not included | Included | Included |
| Free starting check | Included | Limited | Limited |
Storybook and Figma libraries manage components once cataloged. Component Gap gives a quick coverage estimate before that catalog work is done.
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