Build a no-code app by describing it
Most no-code tools still mean building screen by screen, then connecting the logic yourself. Describe the app you want in chat, and B12 builds it, backend included.
Start building for free
Describe it the way you'd say it
- “Add a login so members can see their order history.”
- “Turn this CSV into a searchable directory.”
- “Set up a booking page that syncs with my calendar.”
- “Add a database to store what people submit.”
- “Build an internal tool for my team to track projects.”
That's the whole process.
What “backend” actually means here
Most no-code app builders and platforms get you the screens, and their AI can scaffold a database. The auth flow, the payment wiring, the domain and hosting, that part's still on you. With B12, you ask for the feature and the Agent builds it in.
- User accounts and access
- Sign in, member dashboards, admin controls.
- A real database
- Store what people submit or upload, no spreadsheet workaround.
- Payments and bookings
- Checkout, receipts, recurring billing, booking flows.
- Connections to tools you already use
- Stripe, Calendly, anything with an API.
It runs on Supabase, the same infrastructure trusted by millions of developers. You just don't have to set it up yourself. See how B12's backend works in more detail on the backends page.
How B12 compares to other no-code app builders
Scroll to see every column →
| B12 | Bubble | Adalo | Glide | |
|---|---|---|---|---|
| How you build | Chat with AI | Drag-and-drop canvas. AI assists inside it. | Drag-and-drop canvas. AI assists inside it. | Prompt, spreadsheet, or file |
| Backend included | Built in when you ask, on the Website plan and up. Runs on Supabase. | Native database and workflows. Its AI can scaffold them, then you refine them in the editor. | Hosted Postgres database on every plan. Ada can generate the structure from a description. | Built-in database. Its AI agent can set up the data for you. |
| Hosting | Included. | Included on paid plans. The free plan cannot publish a live site. | Included. The free plan publishes to an adalo subdomain. A custom domain needs a paid plan. | Included on paid plans. The free plan cannot publish an app. |
| Starting price | Free to publish on a b12sites.com subdomain. $24 a month for your own domain and the backend. | Free tier is development only. Paid plans start at $32 a month for web apps, more for mobile. | Free tier publishes to an adalo subdomain. Paid plans start at $45 a month. | Free tier is build-only. Paid plans start at $25 a month. |
| Code to manage | None. | None. | None. | None. |
Prices are each vendor's lowest monthly starting price, checked against their sites in September 2026. Bubble's number is the web-only Starter plan billed monthly, its page defaults to web plus mobile, billed annually. Glide's number is for GlideOS; legacy Glide Classic is priced separately.
Where B12 fits, and where it doesn't
B12 is built for people who want a working app. Describe what you need, and the backend, a domain, hosting, and billing come with it.
If you'd rather assemble the app yourself, screen by screen on a drag-and-drop canvas with AI assisting as you go, Bubble or Adalo may fit better. B12 fits people who'd rather describe the outcome and let the Agent build it. See how B12's plans compare on the pricing page, or read more about B12's chat-built apps on the AI app builder page.
Frequently asked questions
A no-code app builder lets you create a working app, screens, data, and logic, without writing code. Most still ask you to wire up that logic yourself in a visual editor. B12 builds it from a description instead.
No. Describe what you want in chat, and B12's Agent builds the pages and backend together.
Yes. Ask for what you want to store, and B12 sets it up for you.
Building is free, and publishing is free too, on a b12sites.com subdomain. Your own domain and the backend, with a database, payments, and bookings, come with the Website plan at $24 a month.
Yes. Ask the Agent to add checkout, recurring billing, or a booking flow, and it wires it in.
B12 builds responsive web apps, not native iOS or Android apps. They work well on any device, and open straight in a browser, no app store required.
Describe your app and see it built
Start for free and describe what you want. Add the backend, your own domain, and billing when you're ready to launch.
