In short
This Lovable AI app template is a complete ChatGPT-style chat app: a landing page, a new chat screen with suggested prompts, the conversation view with streaming answers, a library of past chats, memory settings and a profile page. Build it in Lovable, store chats in Supabase, and call your AI provider from a Supabase edge function so your key stays private.
Who this AI chat app template is for
Anyone building an AI product on top of Claude, GPT or Gemini: a niche assistant, a support bot, a writing tool or a company-internal chat.
The model is the easy part now; the experience is what people judge. This set gives you the full chat experience, from the first empty screen to memory settings, so your AI app feels as polished as the big ones.
What each key screen must get right
New chat
A friendly greeting and 3 to 4 suggested prompts that show what the assistant is good at.
Conversation
Streaming answers, a stop button, copyable code blocks and a message box that grows with the text.
Chat library
Search, rename and delete past chats, grouped by date.
Memory settings
What the assistant remembers about the user, and a way to edit or clear it.
AI chat app screens, one by one
1. Landing page
The public page for the assistant: what it helps with, a demo of a conversation, pricing and a sign up button. It sets the tone of the brand before anyone chats.
2. New chat
A greeting, a large message box and suggested prompts that show what the assistant is good at. It removes the blank page problem for new users.
3. Conversation
The conversation: user messages in soft bubbles, assistant answers as formatted text with code blocks, a thinking animation, streaming and a stop button.
4. Chat library
Past chats grouped by date with search, rename and delete. People come back to old answers far more often than you expect.
5. Memory settings
What the assistant remembers about the user, shown as editable items with a clear all option. It builds trust in how personal data is used.
6. Profile
Account details, plan and usage, theme and data export. The place users go to understand what they pay for and how much they use.
How to build this AI chat app in Lovable
Edge function before UI
Paste the build prompt and create the Supabase edge function that calls your AI provider, with the key stored as a secret.
New chat and conversation
Build the new chat screen and the conversation view together, streaming the edge function response.
Save and list chats
Store conversations and messages, then build the chat library with search and rename.
Memory and profile
Finish with memory settings and the profile page, including usage limits per user.
Supabase tables
The data a AI chat app needs. Lovable creates these when you connect Supabase.
conversationsTitle, user, model, created and updated dates.messagesConversation, role (user or assistant), content, tokens.memoriesFacts the assistant keeps about the user, editable.usageMessages and tokens per user per day, for limits and billing.Lovable AI app template build prompt
The full Lovable prompt for this AI chat app: build order, Supabase tables, row level security, auth and design rules, ready to paste.
Lovable build prompt: AI chat appBuild a AI chat app called [product name] for [audience]. Use React, Tailwind CSS and Supabase. DESIGN I will paste a BrowserMoon template for each screen. Match every template exactly: fonts, spacing, colours, corner radius and components. All screens must look like one product. Every screen works at 375px wide with no horizontal scroll.
Common mistakes and how to avoid them
Calling the AI API from the browser
Put the call in a Supabase edge function and keep the key as a secret.
No limits
Track usage per user and set daily limits, or one heavy user can run up your bill.
Answers that appear all at once
Stream the response word by word; it feels twice as fast.
No empty state
Suggested prompts on the first screen teach people what to ask.
How to grow your AI chat app after launch
Popular next features are file uploads, shared chats with a public link, custom assistants with their own instructions, and voice input. Each fits the same conversation design without new layout work.
To monetise, add a plan with a higher daily limit and a better model, and show remaining messages in the profile screen.
AI chat app launch checklist
- The AI key is only in Supabase secrets; searching the browser bundle finds nothing.
- Answers stream, and the stop button really stops the request.
- A user cannot open another user's conversation by changing the URL.
- Daily usage limits block extra messages with a friendly explanation.
- Long code blocks scroll inside their box and the copy button works.
- Clearing memory removes it from future answers.
Frequently asked questions
Can Lovable build an AI chat app?
Yes. Lovable builds the screens and the Supabase backend, and calls your AI provider from an edge function. This template gives it the design for every screen.
How do I keep my API key safe?
Never call the AI provider from the browser. Ask Lovable to put the call in a Supabase edge function and store the key as a secret.
Can answers stream word by word?
Yes. Ask Lovable to stream the edge function response and render it as it arrives, with a stop button.
Which AI providers work?
Any with an API: Claude, OpenAI, Gemini or others. The design does not change.
Can I give the assistant a custom personality?
Yes. Store a system prompt per assistant in a table and send it with every request from the edge function; users never see it.
How long does it take to build an AI chat app in Lovable?
With the templates and the build prompt, a working version with sign in, saved chats and streaming answers usually takes a day or two of prompting. Polishing limits, billing and edge cases takes longer.
Can users upload files?
Yes. Store uploads in Supabase storage and pass the text or image to the model from the edge function.
Can I charge for it?
Yes. Add Stripe subscriptions and raise the usage limit for paying users.
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