Describe your desktop design
Enter column count, fixed-width elements, smallest tap target, and hover-only features.
MOBILE AUDIT
Mobile Fit
Automatically audits desktop-first MVP designs for problems that will appear on smaller screens.
- 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
Get a mobile-fit score
Mobile Fit weighs column collapse risk, fixed widths, tap target size, and hover dependency against small-screen usability norms.
Adapt and re-test
Stack columns, enlarge tap targets, and add tap equivalents for hover features, then test at 375px.
Continue learning: Who should approve MVP requirements?
Frequently asked questions
Why does column count matter so much?
More than 2 side-by-side columns almost never survives unchanged to a 375px screen — each one needs an explicit stacking or collapsing plan.
What is the minimum tap target size?
44x44px is the widely cited minimum for comfortable touch targets (Apple and Google both recommend similar sizes).
Why flag hover-only features?
Touch devices have no hover state, so any feature that only appears or activates on hover is effectively invisible or broken on mobile.
How We Compare
| Feature | MVPHub | Chrome DevTools device toolbar | Manual QA pass |
|---|---|---|---|
| Structured desktop-to-mobile risk score | Included | Not included | Not included |
| No setup required | Included | Included | Included |
| Live rendering at real viewport sizes | Not included | Included | Included |
| Free | Included | Included | Included |
DevTools device toolbar and manual QA both show the actual rendered result at real viewport sizes. Mobile Fit gives a fast structural score from your design's known risk factors before you get to a testable build.
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