v0 is a UI generator, and it's an excellent one — component-level design work that would take a day by hand comes back in a prompt. Used for what it's built for, it's genuinely one of the best tools available.
The confusion is what happens next. v0 generates interface; it doesn't generate a backend. If your "app" is a v0 export wired to some Server Actions added afterward, the gap between what v0 built and what's actually running your business is bigger than it looks.
The v0-specific issues we see most
Generated UI with no backend at all — the most common misunderstanding about what v0 produced
Server Actions with no auth check inside them
Client components marked 'use client' unnecessarily, killing both performance and SEO
No data-fetching strategy — caching and revalidation left at defaults nobody chose
Accessibility gaps in generated components: missing labels, unmanaged focus, no keyboard paths
Hardcoded placeholder data still present in shipped routes
A checklist you can run yourself
Give this a real go before reaching out — the people who can fix it themselves were never going to hire us, and the ones who read it and realise the scale of the job usually do.
Confirm you actually have a backend. If every "data" call returns a hardcoded array, you have a UI, not an app.
Search for 'use client' across your codebase and check how many of those components actually need interactivity versus just displaying data.
Open any Server Action and confirm it checks who's calling it before it runs — not just that the request has the right shape.
Tab through your app using only the keyboard and note every place focus gets lost or a control can't be reached.
Run a screen reader over your main flow and check whether generated buttons and inputs have real labels, not just visual ones.
Search for placeholder text (sample names, demo data) and confirm none of it shipped to production routes.
Check whether your data-fetching explicitly sets cache/revalidation behaviour, or is relying on defaults nobody chose.
Load your slowest page on a throttled connection and see what a real user with a bad connection actually experiences.
When to get help
Worth getting a second pair of eyes on this once real users are on it, payments are involved, you're handling anyone's personal data, or someone other than you will need to maintain this going forward. Below that bar, the checklist above will get you most of the way.
Read the full AI app rescue guide, or see the checklist for Bolt, Lovable, Cursor or Replit.