Lovable AI Prompt Engineering Guide

Lovable is an AI-powered full-stack app builder that turns natural language descriptions into complete, deployable applications. It handles everything from UI design to backend logic, database setup, and deployment.

This guide will teach you how to write prompts that communicate your vision effectively, resulting in apps that match your expectations on the first try.

Lovable builds applications using:

• React + TypeScript for the frontend
• Tailwind CSS for styling
• shadcn/ui for components
• Supabase for backend and database

Understanding this stack helps you write prompts that align with Lovable's capabilities. For example, you can reference specific shadcn/ui components or Supabase features.

1. Start with the Big Picture

Describe the overall app before diving into details:

Build a project management app for small teams. Users can create projects, add tasks, assign team members, and track progress with a kanban board.

2. Describe the User Flow

Explain how users will interact with your app:

When a user signs up, they should:
1. Enter their email and password
2. Verify their email
3. Complete an onboarding flow to set up their first project
4. Land on a dashboard showing their projects

3. Be Specific About UI/UX

Lovable excels at UI, so describe your visual preferences:

Use a clean, minimal design with:
- A collapsible sidebar for navigation
- Cards for displaying project summaries
- A purple/blue gradient for the primary brand color
- Subtle shadows and rounded corners

4. Specify Data Relationships

Explain how your data connects:

Each user can have multiple projects.
Each project has multiple tasks.
Tasks can be assigned to any user who is a member of that project.
Projects have owners who can invite/remove members.

5. Include Authentication Requirements

Be clear about user authentication needs:

Add authentication with email/password signup and Google OAuth.
Users should stay logged in for 30 days.
Include password reset functionality.

SaaS Application

Build a subscription-based habit tracking app called "Daily Wins."

Features:
- User authentication with email and Google
- Dashboard showing today's habits with checkboxes
- Habit creation with custom icons, colors, and frequency (daily/weekly)
- Weekly and monthly progress charts
- Streak tracking with celebratory animations
- Mobile-responsive design

UI Style:
- Light, friendly color palette with greens and teals
- Large touch targets for mobile
- Confetti animation when completing all daily habits

Monetization:
- Free tier: Up to 5 habits
- Pro tier ($5/month): Unlimited habits, detailed analytics, export data

Marketplace/Directory

Create a local services marketplace called "NeighborHelp."

Features:
- Service providers can create profiles with:
  - Name, photo, bio
  - Services offered with pricing
  - Availability calendar
  - Reviews and ratings
- Users can:
  - Search/filter providers by service type and location
  - Book appointments
  - Leave reviews after service completion
  - Message providers

Data:
- Providers linked to service categories
- Bookings connect users to providers with date/time
- Reviews linked to completed bookings

UI:
- Card-based provider listings
- Map view for nearby providers
- Clean booking flow similar to Calendly

Internal Tool

Build an inventory management dashboard for a small retail business.

Features:
- Product catalog with SKU, name, price, quantity, category
- Low stock alerts (configurable threshold)
- Barcode scanning for quick lookup
- Sales tracking linked to inventory
- Supplier management with reorder points
- CSV import/export

Dashboard:
- Overview cards: total products, low stock count, total value
- Recent activity feed
- Charts: inventory value over time, top selling products

Users:
- Admin: Full access
- Staff: View-only, can update quantities
- Viewer: Dashboard only

Lovable works best with iterative refinement. Start broad, then add detail:

Round 1: Core Structure

Build a recipe sharing app. Users can:
- Sign up and create profiles
- Add recipes with ingredients and steps
- Browse and search recipes
- Save favorites

Round 2: Enhance Features

Add to the recipe app:
- Recipe categories and tags
- Nutritional information (calories, protein, carbs, fat)
- Serving size adjustments that recalculate ingredients
- Print-friendly recipe view

Round 3: Social Features

Add social features:
- Follow other users
- Comment on recipes
- Share to social media
- Weekly featured recipes on the homepage

Round 4: Polish

Polish the recipe app:
- Add skeleton loading states
- Improve empty states with helpful messages
- Add keyboard shortcuts for power users
- Optimize images with lazy loading

Too Vague

Bad: "Build me a business app"

Good: "Build an invoicing app for freelancers. Features: create/send invoices, track payments, client management, expense logging, monthly reports."

Missing User Context

Bad: "Add a dashboard"

Good: "Add a dashboard for business owners showing: monthly revenue, outstanding invoices, top clients, and recent activity"

Ignoring Mobile

Bad: Not mentioning mobile at all

Good: "The app should be fully responsive with a mobile-first approach. Consider thumb-friendly touch targets for mobile users."

Unrealistic Scope

Bad: "Build a full social network with video, live streaming, marketplace, and AR filters"

Good: Start with core features, iterate to add more over time