Lovable vs v0
v0 makes the better interface. Lovable makes the working application. The right pick depends on which half of the problem you actually have.
Last checked . Jump to the same task in both tools
Short answer
v0 for anything judged on how it looks; Lovable for anything that needs a login and a database. v0's design instincts are the strongest here — spacing, type scale, and component composition come back needing less correction than any competitor. What it does not have is a backend, auth, or a deploy story, because it generates components you paste into a project you control. Lovable generates the whole application with Supabase wired in, and its visual output is solid rather than exceptional. Many people use both, and it costs nothing to do so.
Choose Lovable if
- The app needs user accounts, roles, and persisted data
- You want a complete multi-page application rather than components to assemble
- You need a form or waitlist that actually writes somewhere on the first try
- You would rather not wire Supabase yourself
Choose v0 if
- The page is judged on how it looks in the first two seconds
- You already have a codebase and want to drop screens into it
- You want to iterate on one section cheaply rather than regenerate a project
- You want zero lock-in — the output is components in your repo
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Lovable vs v0, side by side
| Dimension | Lovable | v0 |
|---|---|---|
| Scope of output | Whole application, multiple pages | Components and page layouts |
| Design quality | Solid; needs direction to stand out | Best here by a clear margin |
| Auth and database | Supabase, first-class | None |
| Deployment | Built into the flow | Your problem |
| Fits an existing codebase | Poorly — it wants to own the project | Perfectly — paste the component |
| Iteration cost | Regeneration risk across screens | Section at a time, cheap to redo |
| Lock-in | Supabase wiring takes work to move | None — it is your code immediately |
| Prompt shape | Product spec: pages, data, roles, states | Visual direction: type, palette, motion, rhythm |
| Pricing shape | Free daily messages, then credit-based plans | Free tier with monthly credits, paid scales it |
A check marks the tool with the clearer advantage on that row. Rows with no check are close enough that the difference is preference, not capability.
The split here is unusually clean. v0 is a UI generator that produces React components in the Tailwind and shadcn idiom, and it is better at that job than anything else in this category. Lovable is a full-stack app builder where Supabase is part of the product rather than an integration.
Where people go wrong is picking based on the first screen. Both will produce a nice-looking landing page, and v0's will look better. That tells you nothing about which one you need, because the question is what happens next — whether the thing you are building has users and data, or just content and a call to action.
The second thing worth knowing: these compose. v0's output is components in your repo with no lock-in, so using it for the screens that carry visual weight inside a Lovable project is a normal thing to do rather than a compromise.
The same task, prompted for each tool
Feature tables describe a difference. These show it. Each pair below is the identical task written for Lovable and for v0, and the gap between them is the gap between the two tools.
Design an agency landing page
Create a one-page site in Lovable for {{product}}, aimed at {{audience}} — an agency page where the work does the talking and the contact form actually submits.
Page order:
1. Hero — a two-line claim built from {{product}}'s specialty (what they make, who wins from it), with a thin strip of 5 client names underneath.
2. Featured case — one project at full width: large image area, client name, the problem in one sentence, the result as a number.
3. More work — 4 additional projects in a 2-up grid, each with title, category tag, and a single result stat.
4. Capabilities — an accordion of 4 service groups; each opens to a 2–3 sentence description plus 3 deliverable bullets.
5. Process — 3 phases (shape / build / ship — rename to fit {{product}}'s discipline) with a week-range and an outcome per phase.
6. Studio — a 2-sentence manifesto beside a team grid (photo placeholder, name, role) for up to 6 people.
7. Contact — a working form (name, email, budget range select, message) with inline validation; store submissions in Lovable's database and send an email notification on submit. Beside the form, a direct email address and a response-time promise.
Visual direction:
{{style}}
Palette: {{palette}}
Typography: {{type}}
Motion: {{motion}}
Rhythm and responsive behavior:
- Keep section spacing on one scale: 96px desktop, 56px mobile; accordion rows use 20px internal padding.
- On phones the featured case stacks image-over-text, the team grid drops to 2 columns, and the budget select becomes a full-width control.
The primary call to action is "{{cta}}" — a button in the hero and the label on the contact form's submit. When the page works in preview, deploy it and give me the live URL.
Before handing it back, verify: the form rejects an empty email and writes a row to the database; all 5 work entries show a stat; the accordion opens one panel at a time; nothing overflows at 390px; the deployed URL loads.Build a landing page for {{product}}, aimed at {{audience}}. Generate it in v0 as a Next.js page assembled from separate components with Tailwind and shadcn/ui — one component per section (Nav, Hero, WorkGrid, Capabilities, Process, Manifesto, ContactFooter) — so any section can be regenerated on its own later.
Sections, top to bottom:
1. Nav — wordmark left; links to Work, Capabilities, Process, Contact; a small availability note on the right.
2. Hero — one oversized positioning line naming what {{product}} does and for whom, plus a one-sentence subline naming the specialty. No stock imagery.
3. WorkGrid — 6 selected projects in an asymmetric 2-column grid alternating tall and wide cards; each card carries project name, client type, one outcome metric, and a hover reveal with a one-line summary.
4. Capabilities — 5 services as full-width rows: index number, service name, 10–14 word description.
5. Process — 4 numbered steps in a horizontal band, each with a label and two lines on what the client receives.
6. Manifesto — a 3-sentence belief statement set large, then a compact team row (name, role) for up to 5 people.
7. ContactFooter — the email address at display size, studio location, social links.
Visual direction:
{{style}}
Palette: {{palette}}
Typography: {{type}}
Motion: {{motion}}
Spacing and responsive rules:
- Vertical padding py-24 desktop / py-14 mobile; internal grid gaps step between gap-4 and gap-8, nothing arbitrary.
- Below md, WorkGrid collapses to one column and hover reveals become permanent captions; Process stacks vertically along a left rule.
Derive the hero line and all card copy from {{product}} — name the specialty concretely; "we craft digital experiences" is banned. The primary call to action is "{{cta}}", shown as a Nav button and repeated above ContactFooter.
After building, check that: each section is its own component file; WorkGrid renders exactly 6 cards, each with a visible metric; the hero wraps to no more than 3 lines at 1280px; at 375px there is no horizontal scroll; "{{cta}}" appears exactly twice on the page.Add JWT authentication
Add JWT-based authentication to this app using Supabase Auth, covering the client, the database, and the edge functions. Flows: email and password signup with a confirmation step, sign in, a magic link option, password reset, and sign out. On signup, insert a row into a profiles table keyed to the new user id. Route protection: redirect signed-out visitors from any authenticated route to /login with a return-to parameter, and send signed-in users away from /login. Keep the session in the Supabase client so a refresh does not log anyone out, and refresh tokens silently instead of bouncing to login when the access token expires. Database: enable row level security on every user-owned table and write policies against auth.uid(), leaving no table with policies disabled. Edge functions: each function reads the Authorization header, verifies the JWT through the Supabase client, and returns 401 with a JSON error body when it is missing or invalid. No function may fall back to the service role for user-scoped reads. UI states: a loading gate while the session restores so protected pages never flash before redirect, inline errors for wrong credentials, and a resend link on the confirmation notice. Acceptance: an expired session on a protected page recovers without a visible logout, calling an edge function with no header returns 401 not 500, password reset works end to end from the email link, and querying another user's rows from the browser console returns nothing.
Add JWT authentication to an existing Next.js App Router project without pulling in a full auth provider. Route handlers: app/api/auth/login/route.ts verifies credentials against a users table in {{database}} using bcrypt comparison, then signs a short-lived access token and a longer refresh token with the jose library, both delivered as httpOnly, secure, sameSite strict cookies, never returned in the JSON body or stored in localStorage. app/api/auth/refresh/route.ts rotates the pair, and app/api/auth/logout/route.ts clears both cookies. Protection: middleware.ts guards everything under /dashboard and /api/protected, verifying signature and expiry, redirecting browsers to /login with a from query param for post-login return, and answering API calls with a JSON 401 instead of an HTML redirect. Secrets: read JWT_SECRET from env, and if it is missing show a plain configuration notice in the preview instead of crashing. UI: a /login page using shadcn/ui Form with inline field errors from server-side zod validation, a generic invalid credentials message that never reveals whether the email exists, and a disabled submit state while the request is in flight. Edge cases: an expired access token with a valid refresh token rotates silently on the next request, a tampered token clears both cookies and forces login, and the payload carries only the user id, no email or role claims. Acceptance: in the v0 preview, logging in lands on /dashboard, an incognito visit to /dashboard bounces to /login, and logout revokes access immediately.Every task we have written for both
| Task | Lovable | v0 |
|---|---|---|
| Build a REST API | Prompt | Prompt |
| Build a dashboard UI | Prompt | Prompt |
| Build a SaaS starter app | Prompt | Prompt |
| Add error handling | Prompt | Prompt |
| Add a search feature | Prompt | Prompt |
| Build a hero section | Prompt | Prompt |
| Improve accessibility (a11y) | Prompt | Prompt |
| Build a GraphQL API | Prompt | Prompt |
| Build a landing page | Prompt | Prompt |
| Build a to-do app | Prompt | Prompt |
| Integrate an LLM chatbot | Prompt | Prompt |
| Build a testimonials carousel | Prompt | Prompt |
| Build a pricing page | Prompt | Prompt |
| Build a blog with a CMS | Prompt | Prompt |
| Add email notifications | Prompt | Prompt |
| Build a FAQ accordion | Prompt | Prompt |
| Set up a Postgres database schema | Prompt | Prompt |
| Build a data table with sorting | Prompt | Prompt |
| Build an e-commerce store | Prompt | Prompt |
| Build a CSV import/export feature | Prompt | Prompt |
| Build a portfolio website | Prompt | Prompt |
| Build a file upload endpoint | Prompt | Prompt |
| Build a booking / scheduling app | Prompt | Prompt |
| Build a landing page with a waitlist | Prompt | Prompt |
| Design a SaaS landing page | Prompt | Prompt |
| Design an ecommerce product landing page | Prompt | Prompt |
| Design a 404 page | Prompt | Prompt |
| Design a pricing section | Prompt | Prompt |
| Design a bento grid section | Prompt | Prompt |
| Design a footer section | Prompt | Prompt |
| Design an animated hero background | Prompt | Prompt |
| Design a feature grid section | Prompt | Prompt |
How prompting differs between them
A v0 prompt is art direction. Typography, palette, section rhythm, motion, and what the page must not look like. Its default output without direction is the same purple-gradient hero everyone else generates, and the whole gap between v0 and its competitors only appears once you give it something specific to aim at.
A Lovable prompt is a product spec. Pages, data model, who logs in and what each role sees, empty and error states, and then a styling direction. Declare auth and persistence in the first message; adding them later means rewriting protected routes and policies.
Asking v0 for a spec produces a nice static page with fake data. Asking Lovable for art direction produces something reasonable that will not win on looks.
Why default output looks the same
Both tools, given no styling direction, converge on the average of their training data: gradient hero, centred headline, three feature cards, testimonial row with fake avatars. That is not a v0 problem or a Lovable problem, it is a prompting problem, and it is the single biggest lever on output quality. Name a real palette, a type direction, a section rhythm, and the states nobody remembers — hover, focus, loading, empty, error, and 320px width.
Using them together
This is the recommendation more often than picking one. Build the application in Lovable so auth, data, and deployment are handled, and generate the screens that carry visual weight in v0, pasting the components in. Because v0 output is ordinary React with no lock-in, the cost of combining them is close to zero. The only discipline needed is keeping the design tokens consistent, which means telling v0 the palette and type scale the Lovable app already uses.
Common questions
Is v0 better than Lovable?
At generating interfaces, yes, clearly. At producing a working application with accounts and data, it does not compete — that is not what it is for. Compare them on the job you have rather than on first-screen quality.
Can v0 build a full-stack app?
No. It generates components and page layouts you integrate into a project you control. There is no backend, no auth, and no database, and prompting harder does not produce them.
Can I use v0 components inside a Lovable project?
Yes, and it is a good pattern. Generate the screen in v0, paste the component into the Lovable project, and wire it to your data. Tell v0 the palette and type scale you are already using so the styles stay consistent.
Which is cheaper?
Both meter usage, and v0 tends to cost less in practice because you iterate one section at a time rather than regenerating a project. That advantage disappears if you are trying to build a whole application out of components.