Overview
Lovable and v0 serve fundamentally different purposes. Lovable generates complete full-stack applications with backend, database, and authentication. v0 generates frontend React components that need to be integrated into an existing project. The comparison matters for developers choosing between a complete app builder and a UI generation tool.
Feature Comparison
| Feature | Lovable | v0 by Vercel |
|---|---|---|
| Output | Full-stack app | React components |
| Backend | Supabase (included) | None (frontend only) |
| Database | PostgreSQL | None |
| Authentication | Supabase Auth | None |
| Deployment | Built-in hosting | Copy to project |
| Best for | Complete apps | UI components |
| Security scope | Full-stack risks | Frontend risks |
Security Analysis
Lovable security scope: Full-stack security concerns including database access control (RLS), authentication flows, API security, server-side validation, and backend configuration. More attack surface but also a complete solution.
v0 security scope: Limited to frontend concerns: XSS through dangerouslySetInnerHTML, client-side data handling, form security, and component injection. Smaller attack surface but security depends on the backend you integrate with.
Key insight: Lovable’s security risks are broader but more defined (Supabase-specific). v0’s risks depend entirely on how you integrate the components – they could be very secure or very vulnerable depending on the backend implementation.
Verdict
Choose Lovable when you need a complete application with backend, database, and auth. Choose v0 when you need UI components for an existing project with its own backend. Lovable has more security surface area to manage but provides a complete solution. v0 has fewer inherent risks but shifts security responsibility to your integration layer.