Day 2
What to check in your vibe-coded app UI before launch
Before launching a vibe-coded app, check spacing consistency, colour contrast, accessibility basics, type scale, and component consistency across screens. Xpensiv SI runs these rule-based checks and lists each finding with the element and the suggested fix, so you can check the design of a React app without guessing.
Get API keyThe checks
| Check | Question it answers | What it returns |
|---|---|---|
| Readability | Can visitors read every word? | Contrast ratio, text size, screenshot |
| Phone view | Does it fit a 390px screen? | Overflow in px, screenshot |
| Wording | Do buttons and headings say what happens? | The text, a suggested rewrite |
| Layout | Are spacing and alignment consistent? | The element, a screenshot |
| Accessibility | Does it work with a screen reader and keyboard? | The rule, the element |
| Speed | Does it load quickly? | Lighthouse score |
How a check runs
- 01
You send a link
Any public page of your app.
- 02
A real browser opens it
The page loads at desktop and phone width, and the check records axe rules, layout overflow, text size and, when enabled, Lighthouse scores.
- 03
Measurements become a list
A vision AI model reads the screenshots and measurements and writes the fix list.
- 04
You read the findings
Each finding sits next to its screenshot, so you can start with the ones you can see.
What produces the list
A check loads the public page in a browser and records measurements and screenshots at desktop and phone width. A vision AI model then reads those screenshots and measurements and writes the fix list. It reports what it found and never edits your code; a person approves every change. The findings describe what the check measured, not a judgement about your taste.
Questions answered
What should I check in my vibe-coded app UI before launch?
Check what a visitor sees rather than the code: readability and contrast, whether the page fits a phone, whether buttons and headings say what they do, spacing and alignment, accessibility, and load speed.
What is a UI audit checklist for AI-generated apps (spacing, contrast, accessibility)?
Readability (contrast ratio and text size), phone view (overflow at 390px), wording, layout (spacing and alignment), accessibility (the rule and the element) and speed. Each check returns a finding with the screenshot it came from.
How do I automatically audit design consistency in a React app?
Xpensiv loads the public page in a real browser at desktop and phone width and returns findings, each with the element and what it should be. It reads the rendered page, so it does not need your repository.
Run these checks on your page.
Public pages only. The check reads the live page and does not change your app.