Looking for a Lovable alternative?

What is B12?

B12 is an AI builder that creates websites, online stores, and web apps from a short description. You type your idea, and it launches a working site in minutes. From there, you get built-in tools for SEO, online payments, scheduling, email marketing, and client management. Over 4 million websites have been built on B12 so far.

How is B12 different from Lovable?

Lovable focuses on generating full-stack apps for developers and founders who bring some technical knowledge and want working code. B12 focuses on getting a real business online fast, with a website, payments, and client tools built in.

Both use AI and plain language prompts to build things, but they solve different problems. Unlike Lovable, B12 is closer to a business launch kit than a coding sandbox for developers. Meanwhile, Lovable lets you edit the app visually in its own canvas.

Is B12 good for non-technical users?

Yes, B12 is built for non-technical users who don’t code. You describe your business or idea in plain language, and the AI handles the setup, layout, and first draft of the site. Most people start building with a prompt, review what B12 builds, and then fine-tune text, colors, or images in its visual editor. No coding background is needed to launch or run a site.

What can you build with B12?

With B12, you can build a marketing website, landing pages, an online store, or a booking page for services. You also get tools for contracts, invoicing, email marketing, and managing client contacts, all in a single dashboard. B12 3.0 added whole-site code generation, so the AI writes real code behind your site instead of just templates. An AI Agent can also generate edits to your site with AI assistance whenever you ask.

What’s the difference between AI website builders and AI app builders?

An AI website builder, like B12, focuses on getting a business online: pages, forms, payments, and content people can see and use right away. An AI app builder, like Lovable, focuses on generating a working web app with a database, login screens, and custom logic behind it. Website builders are about being found by potential clients and receiving payments. App builders are about shipping products or tools.

Can B12 build a real backend?

Yes. Tell the AI Agent what you need, like a login page with email signup and a confirmation message when someone signs up, and it builds that in for you. You get user accounts, a built-in database, payments, and bookings, plus integrations to tools you already use like Stripe and Calendly, with your keys kept safe. You describe the idea, and the Agent handles the setup and the complex functions behind it.

Does B12 build native mobile apps?

No, B12 builds websites and web apps that work well on phones through responsive layouts, not native mobile apps. The same is true for Lovable, which also focuses on web apps rather than native mobile app support for iOS or Android. If native mobile apps are a must-have, neither tool is the right fit on its own. Both are strongest for browser-based sites and apps people reach through a link.

When should you pick B12 over Lovable?

Pick B12 if you want a live business website with payments, scheduling, and client tools, and you don’t want to manage code or a database. Pick Lovable if you’re building custom software and want full control over the app’s logic and data. B12 makes sense for product or service businesses, consultants, freelancers, side hustles, and small teams who need to be online now. Lovable makes more sense for builders testing a real-world app idea or shipping a product with its own backend.

Comparing other AI builders too? See how B12 stacks up as a Replit alternative or a v0 alternative.