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bychat lets you build apps by chatting. Describe what you want; iterate in the same thread.

Everything in bychat starts the same way: you describe what you want, and an agent builds it for real. What comes out the other side isn't a mockup or a one-off chat reply — it's a thing you can ship, download, and keep editing. Here's the full range.

Everything you make in bychat is an artifact — a result of the chat you can preview, edit, and keep. Under the prompt box you can pick which kind to build before you send. The buildable apps each come with their own GitHub repo and a live preview:

After sign-up we send a 6-digit code to your email. Enter it on the verify screen to activate your account.

Use the translate icon in the top-right of any page to pick a language. English, Arabic, German, and French are supported, and your choice is remembered on this device.

Tell us what you wish bychat had, or ask us to help build your idea.

Not sure how to phrase your idea? Tap Improve prompt in the composer and AI rewrites your rough note into a clearer, more detailed prompt — keeping your original intent.

Not sure how to start? Copy one of these prompts, paste it into the composer, and tweak the details. Each one is a solid first message that gives the assistant enough to scaffold a real app.

bychat isn't only for full apps and websites — it also generates the marketing material around them: slide decks, logos, and SVG graphics, produced and previewed right in the chat. Each is a single file you can download, edit, and re-upload, so you can build a campaign's whole asset set in one place. This guide covers what you can make and how to get a polished result on the first try.

Every app has one chat thread. Messages and code commits share the same timeline so you can read the conversation that produced any change.

Most AI builders give you one agent, one shot. bychat lets you change how the work gets done. Run a single agent for speed, run two in parallel and keep the better result, or — the one we're proudest of — have two agents work independently and a third review both and write one fresh, final answer. Same chat, different horsepower.

Letting an agent write real code is only worth it if you can trust what comes out. bychat treats verification as part of building, not an afterthought — layered checks run on what the agent produced, and your code stays yours the whole way through.

A few habits get you dramatically better apps for the same effort. The big idea: changes are cheap and safe to throw away, so explore more than one direction instead of betting everything on a single attempt.

When you open an app, a small switcher at the top of the preview lets you choose what you're looking at. Each button shows a different version of your app — here's what they mean.

Publishing takes your latest changes live at your app's public address — the version your visitors see. Until you publish, your edits stay in Preview and the live site is untouched.

Every app is backed by a real GitHub repository. From an app's Settings tab you can Connect your GitHub account and Get the repo — we send a copy of the project's repository to your own GitHub account.

Most real apps need a secret or two — an OpenAI key to call a model, your Supabase URL and keys to reach a database. bychat keeps these as environment variables, set per project (and per branch), encrypted, and never shown back once saved. This guide covers the three ways to provide them: connecting a known service, pasting a .env file, and adding a single variable by hand.

Already have a project on GitHub? Bring it into bychat and keep building it in chat. We read the repo, figure out how it builds and runs, and set up a live preview.

Moving a project over from Lovable is quick because every Lovable app is backed by a GitHub repository. Get that repo into your GitHub account, then import it into bychat like any other repo.