AI app builders: Lovable, Bolt.new, v0, Replit Agent
Lovable if you want a full web app from a plain-language description, with hosting handled for you. Bolt.new for fast prototypes and sites with a built-in backend. v0 if your team works in React and Next.js on Vercel. Replit Agent if you want an app plus agents and automations inside a full coding platform. Build the same small app in two of them before you pay.
| Lovable | Bolt.new | v0 | Replit Agent | |
|---|---|---|---|---|
| Start from | A plain-language prompt | A prompt, Figma, or GitHub | A prompt, screenshot, or Figma file | A prompt in chat |
| Backend | Hosting, auth, payments handled | Bolt Cloud: hosting, databases, auth | Connect your own; deploy on Vercel | Built-in database and auth |
| Code | Git sync, you own the code | Start from a GitHub repo | Next.js code, pull requests | Code in a Replit project |
| Best for | Non-developers shipping a full app | Quick prototypes and sites | React/Next.js teams, designers | Apps plus agents and automations |
What an AI app builder does
An AI app builder turns a description into a working web app. You type what you want, the tool writes the code, shows a live preview, and lets you keep refining it in chat. The four tools on this page all do that. They differ in who they are built for, what happens to the backend, and how much of the code you are expected to touch.
This guide is based on each tool’s official site. Prices and plans change often, so check current pricing on the official page before you commit.
Lovable: full apps from a description
Lovable describes itself as a full-stack AI development platform: describe what you want in plain language and it builds apps, websites, and internal tools. It handles hosting, SSL, and backend infrastructure, and its site lists authentication, payments, analytics, SEO, and connectors to other services. The documentation covers Git sync and ownership of your code, and Lovable says your code and data stay yours.
Pick it if you are not a developer and want to go from idea to a hosted app without setting up servers. Lovable advertises a free start.
Bolt.new: fast prototypes with a backend included
Bolt.new builds websites, apps, and prototypes by chat. You can start from a prompt, a Figma design, a GitHub repository, or a template. Bolt routes each task to a suitable model automatically and says it tests and refactors its own output to reduce errors. Bolt Cloud adds hosting with custom domains and analytics, databases, and user authentication inside the same interface.
Pick it for quick prototypes, campaign pages, and first versions you want online the same day. Bolt also advertises a free start.
v0: UI and Next.js apps from Vercel
v0 is Vercel’s builder. It creates interfaces from a prompt, a wireframe, a screenshot, or a Figma file, connects to a backend for data-driven apps, and deploys to Vercel in one click. It works with Next.js, Tailwind, and shadcn/ui, and it can open a pull request for review instead of deploying directly. Its agent can search the web, inspect sites, and fix errors.
Pick it if your team already works in React and Next.js, or if designers want to hand developers real components rather than static mockups.
Replit Agent: an app builder inside a full coding platform
Replit Agent builds an app or website from a chat description and keeps improving it from your feedback. It has a built-in database and user authentication, connects to services such as Stripe and OpenAI, and tests its own work in a browser, then fixes the issues it finds. It can also build agents and automations that you connect to tools like Slack or email.
Pick it if you want the app and the code environment in one place, or if the project will grow into automations.
How to choose
Start from the job, not the brand. A non-developer who needs a working, hosted product: Lovable or Bolt.new. A team with a React and Next.js codebase: v0. Someone who wants to keep editing code and add automations later: Replit Agent. If two fit, the tie-breaker is usually where the app will live after launch and who will maintain it.
Before you commit: what to test
Build the same small app in two tools: a form that saves to a database, a login, and one page that lists the saved records. Then check three things. Can you export or sync the code? What happens when you ask for a change that touches several files? How much of your plan does one evening of iteration use? If your app needs Hebrew, test right-to-left layout and text in forms early.
Limits to keep in mind
All four generate code quickly, but generated code still needs review before real users and real data touch it. Check authentication, database permissions, and secrets yourself or with a developer. Usage-based plans can run out faster than expected during heavy iteration. Keep your own copy of the code wherever the tool allows it.