In this review, I’m breaking down my hands-on testing of v0 by Vercel, from that first minimalist prompt to the final deployment. You’ll see exactly where the AI excels at writing code and where I hit some pretty frustrating technical walls, like the strict prompt limits and those cryptic console logs.
What Is v0?
v0 is an AI-powered app builder created by Vercel. Instead of dragging boxes around a screen or writing hundreds of lines of code, you build your application by chatting with an AI assistant.
If you’ve used ChatGPT, the interface will feel familiar, but instead of text responses, v0 generates a fully functional web interface that you can see and interact with immediately on the right side of your screen.
The tool is built to eliminate the long, tedious setup phase of starting a new software project. Typically, if you wanted to build a portal for homeowners to request repairs, you would have to manually design the pages, set up a database, and figure out how to connect the two.
v0 handles these hurdles by interpreting your description and writing the code for you in real-time.
Common ways people use v0 include:
- Building functional dashboards to track business data.
- Creating customer portals with login screens and service forms.
- Launching landing pages that require custom, interactive features.
- Prototyping new app ideas to test with real users quickly.
While tools like Wix or Squarespace lock you into rigid templates, and platforms like Bubble have a steep learning curve, v0’s unique advantage is that it doesn’t just give you a visual mockup; it generates actual React and Next.js code. The same stuff professional developers use.
Who Is It For?
v0 is for those who have a clear idea of how an application should work but want to skip the weeks of manual design and setup.
It sits in a unique spot between a basic website builder and a professional development environment.
You’ll find this tool particularly useful if you fit into one of these categories:
- Startup Founders building MVPs: You’re trying to launch a functional product to show investors or test with early users without hiring a full engineering team.
- Small Business Owners and Operators: You’re tired of managing your business through messy spreadsheets and email threads. You can use v0 to build internal tools.
- Developers and Product Managers: You need to move from a concept to a working prototype fast.
- Agencies needing rapid prototypes: You’re building custom solutions for clients and need a way to show them a “real” version of their app rather than a static design file. This allows you to iterate on feedback in real-time during a meeting by simply updating the chat prompt.
v0 Pros and Cons
- No credit card required for signup.
- Generates actual React and Next.js code.
- Breaks project into clear task lists.
- Automatically picks relevant icons and branding.
- Global color updates in one click.
- Single slider for uniform border radius.
- Professional “Glow” shadow style options.
- Perfect mobile responsiveness without extra work.
- Auto-populates database environment variables.
- Deploy to live URL in seconds.
- View raw code while AI writes.
- Timestamped version history for easy recovery.
- One-click Supabase database integration.
- Strict character limit on chat prompts.
- Pushes paid plan immediately after signup.
- No drag-and-drop for layout tweaks.
If you’re tired of fumbling with templates and just want to describe your app into existence, try v0. Just be ready to trim your prompts if they get too long.
V0 Features
- Generate full applications from text prompts.
- View real-time Next.js and React code.
- One-click Supabase database connectivity.
- Deploy live applications in seconds.
- Global styling for colors and corners.
- Automated task lists for project tracking.
- Responsive layouts for any screen size.
- Restore work via project version history.
My Hands-On Experience with v0 by Vercel
When I heard v0 by Vercel could build an entire application through a simple chat interface, I had to see if it was actually useful or just another flashy demo.
1. Getting Started: Signing Up and First Impressions
When I first landed on the v0 homepage, I didn’t see the usual busy dashboard full of analytics or sidebars overflowing with “New Project” buttons. It was strikingly empty.
The center of the screen was dominated by a large, white input field with the placeholder text “Ask v0 to build…” and a headline above it that simply asked, “What do you want to create?”
In the top navigation bar, I saw links for Templates, Resources, Enterprise, Pricing, iOS, Students, and FAQ.
The lack of clutter was nice, but it also meant I had to have a plan ready before I even touched my mouse.
I moved to the top right and clicked the “Sign Up” button. Because v0 is deeply integrated with the Vercel ecosystem, a modal popped up asking me to “Continue with Vercel” or “Sign Up.”
I didn’t have an active session, so I clicked “Sign Up” which redirected me to a clean white page with two large buttons: “Google” and “GitHub,” plus a standard text field for an email address. I typed in my work email and clicked “Continue with Email.”
This is where the first bit of friction hit. I had to leave the browser, wait about thirty seconds for a verification email to arrive, and then copy a six-digit code.
I jumped back into the v0 tab, pasted the code into the six little boxes, and waited for the “Verifying” spinner to finish.
It took about five seconds to redirect me. One detail I really appreciated here is no credit card was required. I’ve tested plenty of “free” tools that demand your billing info before you can even see the interface, so this felt like a low-stakes way to start my project.
Once that was out of the way, I was shown a four-part onboarding slideshow. It highlighted a “new, more powerful git panel,” explained that every chat works on a “new branch” so changes can be tested in isolation, and mentioned that all changes are automatically committed as I chat.
Finally, a modal appeared asking me to “Accept AI Product Terms.” I clicked the black “Accept and Continue” button, and I was finally standing in front of the actual builder.
Overall Review: First Impressions
The signup process is standard but fast, and I loved the lack of a credit card requirement. The interface itself is incredibly snappy and looks high-end, but that initial nudge to pay $30 a month put me on high alert for hidden costs.
2. Building My First App: Step-by-Step Walkthrough
I wasn’t here to build a simple button, so I decided to test v0 with a complex project: a Homeowner Service Request Portal. I wanted a site where people could request plumbing, electrical, or cleaning services and then track those requests on a dashboard. I had a very detailed prompt prepared in my notes, which included:
- A project description
- User table schemas (ID, Name, Email, Phone, Address, Role)
- Core features like authentication
- A specific service request form
I copied my long prompt and pasted it into the main chat box. I hit the black “up” arrow to submit it.
This is where I ran into a major failure.
A red error banner appeared at the bottom of the input area: “Failed to submit message. Start a new chat, retry, or edit your message.”
I clicked the “Retry” circle, but the same error popped up instantly. I realized there was an invisible character limit that I had clearly exceeded. This was frustrating because there was no counter telling me I was over the limit; the tool just broke.
I had to manually prune my prompt. I deleted the database schema details and the technical definitions of the user roles, keeping only the feature list and the form fields I needed. After trimming about 40% of the text, I hit submit again. This time, it worked.
The screen shifted into a split-view. On the left was the chat history, and on the right, a large preview area. I watched as the AI started “Thinking.” Small status updates flickered:
- “Checking integrations”
- “Generating design”
- “Loading Supabase skill”
Then, a “todo list” appeared on the left sidebar under the project name “Homeowner service portal.” It had four items, and I watched the first one, “Task 1 of 4 in progress,” begin automatically.
The first thing it did was “Creating migration script.” On the right, the preview changed to show a file called 001_create_service_requests.sql. I could see the actual SQL code being written in real-time, creating a table with columns for:
- service_type
- description
- status
- urgency
Next, it moved to “Creating Supabase client files,” generating client.ts and server.ts in a lib/supabase directory.
I was genuinely impressed by how much of the “dirty work” it was handling. It then moved to Task 2, which was creating the authentication pages. I saw sign-up/page.tsx and login/page.tsx appear in the file tree on the left.
Finally, it hit Task 3: “Creating landing page.” The preview window suddenly populated with a professional UI. It gave the site a brand name, “HomeServe,” and a hero section with the text “Your Home Services, Simplified.” Below that, it added a “Services We Offer” section with icons for:
- Plumbing
- Electrical
- Cleaning
It even added a “Get Started” button and a “Sign in to Dashboard” button.
The builder interface felt incredibly fast. I didn’t have to wait for “building” or “compiling” bars; the UI just evolved in front of me.
Overall Review: The Building Process
The character limit on the initial prompt is a huge bottleneck for anyone trying to build something serious. It forced me to be vague when I wanted to be specific.
However, once the prompt actually goes through, the speed at which v0 generates real, structured code (not just mockups) is unlike anything I’ve seen in tools like Softr or Wix.
Watching it build a “todo list” and check off database migrations and client files made me feel like the project was actually being engineered, not just assembled.
3. Customizing the Design and Layout
Once the landing page and dashboard were generated, I wanted to move away from the default look.
I clicked the “Design” icon, a small paintbrush, in the top left sidebar. This opened a “Design System” panel.
I started with the “Colors” section. There was a row of five color swatches labeled “Connect,” “Primary,” “Secondary,” etc. I clicked the “Primary” swatch, which opened a standard color picker.
I chose a vibrant, professional blue. As soon as I clicked “Save,” every single button, icon, and accent across all the pages updated to that exact shade of blue. It was a true global design system.
Next, I looked at the “Radius” setting. The default buttons were very sharp and rectangular. I grabbed the slider and dragged it from 0 to 0.625. In the preview window, I saw the corners of the “Get Started” button and the service category cards round off instantly. Under the “Shadows” section, I had four choices:
- Small
- Medium
- Large
- Glow
I clicked “Glow,” and the cards in the “Services We Offer” section suddenly had a subtle, high-end depth that made them look like they were floating.
I then tested the responsiveness using the Desktop, Tablet, and Phone icons at the top of the preview pane.
On Phone view, the site reflowed perfectly. The three-column service section stacked into a single column, the hero image moved below the text, and the navigation links vanished, replaced by a clean hamburger menu icon.
However, I hit a real wall when I tried to do anything granular with the layout. I wanted to move the “Create Free Account” button from the center of the hero section to the top navigation bar. I tried to click and drag it, but nothing happened. v0 isn’t a visual editor.
To make that change, I had to go back to the chat and type a detailed instruction. The AI understood and re-wrote the header component, but it took about 45 seconds of “thinking” just to move one button. It’s a very slow way to do basic layout tweaks.
Overall Review: Customization
The Design System panel is powerful for global changes like fonts, radius, and brand colors. It’s significantly faster than manually styling a site in a tool like Bubble. But the lack of a drag-and-drop editor is a major downside. If you’re a “pixel-pusher,” the chat-based layout editing will feel tedious.
4. How v0 Handles Errors
I wanted to see how v0 would handle things going wrong, and I didn’t have to wait long. When the AI reached the “Run migration” step of my todo list, a massive warning modal popped up in the center of the screen with a yellow alert icon.
It read: “This task may cause extremely destructive actions, and requires approval.”
And on the side, it showed me the SQL code it was about to execute on the database. For a developer, this is a standard safety feature.
But for a beginner, the words “extremely destructive actions” are terrifying. It didn’t explain why it was destructive or what would happen if I clicked “Accept.” I clicked the blue “Accept” button, and it proceeded without issue, but the phrasing is very aggressive and could easily scare off a non-technical user.
Later, I ran into a logic error. I was testing the signup page in the preview, but when I clicked the “Create Account” button, the page just sat there. There was no error message on the UI, no “Success” notification, nothing.
I had to go down to the very top right corner of the screen and click the “Console” tab.
A panel slid up full of technical logs. I saw a yellow warning that read: GotAuthUser: (Anonymous) – (No token).
This is where v0 shows its developer-centric roots. The error handling isn’t “user-friendly”; it’s a raw output of system logs. If I didn’t know that “No token” usually refers to an authentication variable issue, I would have been completely lost.
I had to copy that technical error, paste it back into the chat, and ask “How do I fix this?” The AI realized it had missed a step in the environment variable setup and generated a fix, but it felt like I was acting as a translator between two different parts of the tool.
One other thing I noticed: there is no “Undo” button in the header. When I accidentally asked the AI to “make the background darker,” and it ended up turning the entire page black and hiding my text, I couldn’t just hit Ctrl+Z.
I had to go to the “Versions” history (a small clock icon in the top right). I had to look through a list of timestamped versions, click through them to find the one before my mistake, and click a “Restore” button.
It’s a functional way to recover, but it’s much more clunky than a standard undo/redo system.
Overall Review: Error Handling
v0’s error handling is very transparent, which is great for developers but potentially overwhelming for everyone else. Seeing raw SQL and console logs is helpful if you know what you’re looking at, but the tool doesn’t do a good job of “holding your hand” through a crisis.
The lack of a simple Undo button and the use of scary language like “destructive actions” makes the environment feel a bit more high-pressure than a traditional no-code builder.
5. Publishing the App and Adding Integrations
The final step was making the Homeowner Portal live. I clicked the “Connect” tab in the left sidebar.
This opened a menu of integrations. I saw “Vercel AI Gateway,” “Upstash,” and “Supabase.” Since I needed a real database for my service requests, I clicked “Install” on the Supabase option.
This triggered a multi-step workflow that took me completely out of the v0 interface. A new browser tab opened to a Vercel “Checkout” page. It felt very formal. I had to click “Accept and Create” to set up a new Supabase account.
Then, I had to choose a “Primary Region.” I saw a long list of options like “N. Virginia, USA (East)” and “London, UK (Europe),” and I picked “Washington, D.C., USA (East)” because the tool flagged it as recommended for my project.
Next, I reached a “Create Database” screen. It suggested a name, “supabase-purple-tree,” and asked me to pick a plan. I noticed a “Supabase Pro Plan” for $25/month, but I scrolled down and found the “Supabase Free Plan” at the bottom.
I clicked it and then hit the black “Create” button. A progress bar appeared, and for about 30 seconds, I watched it spin. Once it finished, the tab closed automatically, and I was back in the v0 builder.
This is where v0 impressed me. I noticed a new tab in the sidebar called “Vars” (Variables). When I clicked it, I saw that v0 had automatically filled in all the technical strings, such as NEXT_PUBLIC_SUPABASE_URL, SUPABASE_ANON_KEY, and SUPABASE_SERVICE_ROLE_KEY.
In any other tool, I would have had to manually copy and paste these keys from the Supabase dashboard into my app settings. v0 handled the entire backend handshake in the background without me doing a single thing.
I went back to the chat and gave one last instruction: “Now that the database is connected, make the forms work.”
The AI wrote a middleware.ts file to handle route protection and updated the client.ts files. Then, I moved to the top right corner and clicked the “Publish” button. A small modal appeared showing a build process: “Building,” then “Deploying.”
After about 45 seconds, it gave me a live URL. I opened it in a new tab, and the site was actually there.
I tested the signup flow by entering a fake email and password. When I clicked “Create account,” the UI smoothly transitioned to a “Check your email” success screen with a little green mail icon.
It even correctly redirected me to /auth/sign-up-success. The whole process from blank prompt to live, authenticated application took about 40 minutes.
One nice feature I discovered is that v0 automatically handles domain management for you. Once published, I clicked into the project settings and found a “Domains” section with two parts:
- Default Domain: v0 generates a permanent URL where your app will always be available. Mine was structured as: v0-your-domain.vercel.app. In my case, it created: v0-homeowner-service-portal.vercel.app
- Connected Domains. This is where you can purchase or connect custom domains to make your app look more professional. You’ll see two buttons: “Buy” and “Add.”
What I appreciated here is that v0 doesn’t force you to buy a custom domain to test your app.
The default .vercel.app domain is live immediately and works perfectly for testing, sharing with stakeholders, or even launching an MVP. If you want a custom domain later (like homeserviceportal.com), you can buy one directly through the interface or connect one you already own.
The domain was live immediately. No DNS waiting period, no manual configuration. It just worked.
Overall Review: Publishing and Integrations
The deployment process is where v0 really excels. The way it handles the Supabase integration and automatically populates environment variables is a massive time-saver. It removes the most frustrating parts of full-stack development.
Deployment to Vercel is instant and reliable. While the tool still feels like it’s aimed at people who aren’t afraid of a little code, the ability to go from a text prompt to a live, database-connected app in under an hour is a genuine leap over traditional builders.
Pricing & Plans
Unlike traditional builders that charge per app or per page, v0 uses a “credit-based” system.
Every time you send a prompt or the AI generates code, you consume credits based on “tokens” (the bits of text the AI processes).
| Plan | Price | Included Monthly Credits | Key Features |
|---|---|---|---|
| Free | $0/mo | $5 | 7 messages/day, Deploy to Vercel, GitHub sync |
| Premium | $20/mo | $20 | $2 daily login credit, Figma import, 5x higher file limits |
| Team | $30/user/mo | $30 | $2 daily login credit, Team collaboration, Shared billing |
| Business | $100/user/mo | $30 | Training opt-out, Shared credits, Team collaboration |
Payment and Model Costs
- Model Levels: You can choose between v0 Mini (cheapest/fastest), v0 Pro (balanced), and v0 Max (most intelligent). Using v0 Max for complex logic consumes tokens five times faster than v0 Mini.
- Payment: They currently accept standard credit cards but do not accept PayPal.
- Refunds: There is no refund policy because every AI generation costs them computing power immediately.
My Recommendation
If you’re just experimenting, stay on the Free plan. If you have a specific project you need to launch, the Premium plan offers the best value. The $2 daily login bonus adds an extra $60 of value over a month, which is much more practical for the trial-and-error nature of building with AI.
Be aware that v0 is a separate charge from your Vercel hosting plan; you will pay for both if you use Vercel for your production site.
Alternative to v0
If you are looking for an alternative that focuses more on end-to-end application engineering and database management, Lovable is the most direct competitor.
While both tools use a chat interface to write code, v0 is a Vercel-native specialist focused on Next.js, whereas Lovable positions itself as a full-stack software engineer that handles everything from the frontend to the complex backend logic.
Comparison Table: v0 vs. Lovable
| Feature | v0 | Lovable |
|---|---|---|
| Ease of Use | Very high; minimalist chat | High; collaborative chat flow |
| Best For | High-performance React/Next.js UIs | Full-stack CRUD applications |
| Mobile Apps | Responsive web apps | Responsive web apps |
| Backend & Data | Marketplace integrations (Supabase) | Deep, native Supabase integration |
| Design Flex | Powerful global Design System panel | Mostly chat-based design tweaks |
| Performance | Optimized for Vercel Edge hosting | Standard React/Vite performance |
| Pricing | Credit-based ($20/mo Premium) | Subscription-based ($25/mo Pro) |
Final Verdict: Is v0 Actually Worth Using?
After spending an afternoon building the “HomeServe” portal, I’ve realized that v0 is a very specific tool for a very specific type of person.
It’s more like a high-speed engine that requires a reasonably skilled driver.
Watching the AI check off a “to-do list” while writing real SQL and React code was a genuine high point. If you need to build a functional prototype or an MVP to show investors, the speed here is unmatched. The global design system is another huge win.
However, the friction is real. The “out of credits” modal appearing before my first prompt was a slap in the face. If you aren’t ready to pay $20 to $30 a month, you aren’t going to get very far.
The Bottom Line: If you are a technical founder or a designer who understands how the web works, v0 is a powerhouse. It automates the boring setup and lets you build real software at an incredible pace.
But if you’re looking for a simple drag-and-drop experience where you never have to look at a technical log, stick with Softr or Wix. v0 is for builders who want to engineer their apps through conversation, not just assembly.
