v0vslovable

what each one actually is

v0 — Vercel's AI component generator. Describe a UI, get back React components using shadcn/ui and Tailwind. Strong at producing clean, composable components that drop into existing Next.js projects. Not really an app builder.

Lovable — an AI app builder that generates full-stack applications. Give it a description of an app, it scaffolds the frontend (React), wires up a Supabase backend, and sets up auth. Aims to go from prompt to deployed app.

pricing, honestly

v0 has a free tier with limited generations. Pro is $20/month for more credits. The credit model is slightly opaque — you'll need to experiment to understand what a "generation" costs in practice.

Lovable's free tier is very limited — a handful of messages before you hit a wall. Pro is $25/month. The credit system is similarly opaque. For heavy use, you'll be at $50/month on either platform.

edge: push — both are similarly expensive for heavy use. v0's free tier goes further for casual exploration of components.

what it's actually like to use them

v0's output quality for UI components is high. The generated code is clean, uses shadcn/ui conventions correctly, and drops into existing projects without much friction. The iterative refinement loop (describe what to change, it updates) is smooth. Where it struggles: anything beyond a single component or page. Asking v0 to build a full feature with auth and data fetching gets messy fast.

Lovable's magic is the full-stack scaffolding. Describe an app, it generates the entire structure including Supabase tables, auth, and CRUD operations. The first generation is often impressively close. The problem is editing: making precise changes to Lovable-generated code can be frustrating because the system has opinions about structure that conflict with yours. The more you deviate from its model, the harder it gets.

who v0 is for

• Developers who need clean React/shadcn components fast
• Designers who want to prototype specific UI patterns without writing boilerplate
• Teams with existing Next.js codebases who want to add polished components
• Anyone who wants AI assistance at the component level, not the app level

who Lovable is for

• Founders who want to validate an MVP quickly without a developer
• Developers who want to scaffold the boilerplate of a new full-stack app
• Product teams prototyping a new product concept at app scale
• Non-technical builders who want a working app with real auth and data

when to avoid each

skip v0 if: you need to build a complete application. You'll spend more time stitching components into an app structure than it would take to write it directly.

skip Lovable if: you need precise control over the output code, you have strong opinions about project structure, or you're adding to an existing codebase. Lovable works best on greenfield projects where you accept its defaults.

stuff their landing pages won't tell you

• v0's components look great in isolation but require careful integration into real design systems — the styling assumptions may conflict with yours
• Lovable can get confused on complex editing sessions and sometimes makes changes you didn't ask for
• Both tools produce code that's a good starting point, not a finished product — budget editing time
• v0's output is tied to the shadcn/ui component library, which is excellent but opinionated
• Lovable's Supabase integration is tightly coupled — switching backends is a rewrite

the call

v0 if you're a developer adding components to an existing project. Lovable if you're starting from scratch and want the fastest path to something functional. Neither will ship your product for you — but both will give you a head start that would have taken days of boilerplate writing.