I only need a campaign landing?

v0. Describe sections, ask for light/dark mode and copy code into your Next on Vercel. Lovable adds backend you do not need.

I want CRUD and login for an investor demo?

Lovable is usually faster for something clickable with real users on Supabase. Review permissions before sensitive data.

Can I use both on the same project?

Yes: MVP in Lovable with GitHub sync; new or marketing screens in v0 and merge manually or with Cursor on a branch.

Which replaces Cursor?

Neither. Both generate; Cursor reviews diffs on a mature repo. Flow: generate here, harden in Cursor (cursor-repo-existente).

Where do they fit in the code catalog?

In mejores-herramientas-ia-codigo alongside Cursor and Claude; v0 and Lovable are the «from prompt» layer, not the IDE.

v0 vs Lovable for UI

Two chat-first generators: one optimizes React/Next components for Vercel; the other, an app with Supabase, auth and Git from the first prompt.

	v0	Lovable
Best for	React/Next UI, shadcn and deploy on Vercel	App with auth, Supabase and publish-from-chat
Core stack	React, Next.js, Tailwind, shadcn (v0.app)	React, Tailwind, Supabase, builder hosting
Backend and data	You wire API/DB in your repo; v0 does not bundle Supabase	Supabase integrated in the flow (auth, tables per UI)
Git and handoff	Copy code or Vercel project; ideal if you already have a repo	GitHub sync highlighted; clone and open in Cursor next
Iteration	Chat on components and pages with web preview	Chat on screens + logic + data in one session
Curve if you are not a developer	Medium: you paste code or understand Vercel deploy	Lower for «I have an app with login» without a terminal at first
Main risk	Pretty UI with state or fetch unreviewed in production	RLS, secrets and debt if you never leave the builder
Entry plan	Free with credits + paid tiers on v0.app	Free with limits + paid tiers on lovable.dev

Verdict

Pick v0 when the deliverable is React + Tailwind/shadcn UI that will live in a Next repo on Vercel — landings, dashboards, forms and blocks you copy or deploy without standing up a backend from scratch. Pick Lovable when you want a shippable full-stack MVP: login, Supabase tables, preview iteration and GitHub sync so a developer continues in Cursor. A common combo: product prototype with data in Lovable; marketing or admin screens refined in v0 and merged into the same repo after sync. For the broader code-tool map, see mejores-herramientas-ia-codigo; for real PRs on an existing repo, cursor-cloud-agent-primer-pr.