Bolt
Spin up web apps in the browser with StackBlitz
Category
Prompt-to-app builder
Best for
Fast prototypes and shareable demos
Pricing
Free tier, paid plans for heavier use
Bolt (from StackBlitz) is a prompt-to-app builder that runs entirely in your browser using WebContainers — a Node.js runtime that works without a server. That means projects boot almost instantly and you can preview, edit, and deploy without leaving the tab. Ask for an app, watch it build, then keep refining in chat.
Because the runtime is in-browser, Bolt is great for fast prototyping and sharing working demos. It supports popular frameworks out of the box and lets you pull in npm packages, so you can build real, non-trivial front-ends quickly. It's a favorite for hackathons and anyone who wants to see a working app in seconds.
Treat Bolt as your sketchpad: it's the quickest way to test whether an idea feels right before you commit to building it properly somewhere else.
Bolt FAQ
What makes Bolt different from Lovable or Replit?
Bolt runs the whole project in your browser using WebContainers, so apps boot in seconds with no server to provision. That makes it ideal for quick prototypes and shareable demos.
Can Bolt build back-end features?
It's strongest on front-end work, but you can connect external services and databases. For heavier back-end logic, many builders start in Bolt and move the project elsewhere.
Is Bolt free?
Yes, there's a free tier with a daily token allowance, plus paid plans for heavier use.
Is Bolt good for beginners?
Yes, for a first look at what AI building feels like — nothing is faster to start. Where beginners stall is the moment the idea needs a back end, because that part isn't automatic. As a way to test an idea before committing, it's excellent.
What can you build with Bolt?
Front-end-heavy things, fast: landing pages, prototypes, demos, dashboards and interactive mockups you can send someone as a link. Apps with logins, saved data or payments are possible by connecting outside services, but that's work Bolt won't do on your behalf.
Can you export the code from Bolt?
Yes — projects can be downloaded or pushed to your own repository, so you can carry on in a code editor or another platform. Plenty of builders treat Bolt as the first draft and finish the app somewhere with a stronger back-end story.
Bolt vs v0 — which is better?
Bolt if you want a whole app running in your browser. v0 if you want polished interface components to paste into a project you already have. Bolt answers whether the thing works; v0 answers whether it looks right. Our comparison covers both cases.
Other tools to compare
Lovable
Full-stack apps from a chat prompt
🟠Replit
AI agents that run and ship code in the cloud
🖱️Cursor
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