Type your app idea. FirstThree scopes a tiny v1 (what to build, what to skip, the simplest stack) and writes three copy-paste prompts for Lovable, in build order.
Before the prompts you get the plan: 3 to 5 things v1 must do, what to skip (with a reason for each), the simplest stack for Lovable, and the main screens. Every prompt says what not to build yet and ends with a “Done when…” check.
Unedited FirstThree output for two one-sentence ideas.
Real example 1
PawsTime Booking: “a booking page for my dog-walking business where clients pick a time slot”
A clean web app for a dog-walking business where clients can view available time slots and book a walk.
v1 includes
- A welcoming homepage featuring business details and services
- An interactive calendar or list view of available walking time slots
- A simple booking form to capture client and dog details
- A confirmation screen showing the booked appointment
Skip for now
- User Accounts · Clients can just enter their name and email directly.
- Online Payments · Collect payment in person or via invoice later.
- Admin Dashboard · You can view bookings directly in your calendar or email.
- SMS Notifications · Email confirmations are enough for version one.
Stack: React with Tailwind CSS · None for v1 · Browser local storage or sample data · Lovable built-in hosting
1Build the main booking interfaceYou will have a gorgeous, responsive landing page with a working time slot selector and sample data.
Create a modern, friendly landing page for a dog-walking business called PawsTime Booking using React and Tailwind CSS.
- Design a warm, inviting hero section with a playful dog theme, clear headline, and friendly copywriting.
- Add a dedicated booking section that displays a list of available time slots for today and tomorrow, using realistic sample data.
- Include an interactive time slot selection mechanism where clicking a slot opens a simple booking form.
- The booking form must ask for the client's name, email, dog's name, and dog's breed, with basic validation.
- Ensure the entire layout is fully responsive and looks fantastic on both mobile phones and desktop screens.
Do not include user accounts, backend databases, or online payment gateways for now.
Done when: You can view sample time slots on the page, click one, fill out the form, and see a success state.
2Add booking persistence and statesYou will have a fully interactive booking flow that saves client appointments locally so they persist during the session.
Update the PawsTime Booking app to handle booking submissions cleanly and manage state effectively.
- When a client successfully submits the booking form, immediately remove that time slot from the available list so it cannot be double-booked.
- Save the list of active bookings to the browser's local storage so they do not disappear on page refresh.
- Create a clear confirmation view or modal that summarizes the booked walk details, including date, time, client name, and dog name.
- Add an empty state message for the time slots list in case all slots for the day are fully booked.
- Polish all UI components with smooth transitions, clean spacing, and consistent friendly typography.
Do not add user authentication or external database connections yet.
Done when: Submitting a booking removes the slot from the list, shows a confirmation message, and retains the data if you refresh the browser.
3Polish and final reviewYou will have a polished, production-ready v1 booking page ready to share with your clients.
Perform a final polish and review of the PawsTime Booking app to ensure a seamless client experience.
- Add a friendly FAQ section at the bottom of the page answering common questions about your dog-walking services.
- Include subtle error states and helper text for the booking form fields if left blank or mistyped.
- Add a 'My Bookings' tab or view so clients can quickly check their upcoming scheduled walks stored in this browser.
- Ensure all buttons have delightful hover effects and loading states during form submission.
- Check that the mobile layout is completely thumb-friendly with properly sized touch targets.
Do not add external APIs, text message alerts, or admin dashboards.
Done when: You can browse the FAQ, book a slot with validation, view your scheduled walks, and test the app smoothly on a mobile screen size.
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Real example 2
Evening Yoga Waitlist: “a landing page with waitlist for my local yoga studio's new evening classes”
A simple landing page and waitlist form for a local yoga studio's new evening classes.
v1 includes
- Hero section with studio branding and class schedule overview
- Feature highlights of the evening classes
- Waitlist signup form that captures name and email
- Success confirmation state after joining
Skip for now
- User accounts · Not needed just to collect email signups.
- Admin dashboard · You can view emails directly in your database.
- Payment processing · Signups are free for the waitlist.
- Email notifications · Can be handled manually for v1.
Stack: React with Tailwind CSS and Lucide icons · Supabase · Supabase PostgreSQL database · Lovable Cloud
1Build Landing PageCreate a beautiful, responsive landing page with a hero section, class details, and a static waitlist form.
Create a welcoming, modern landing page for a local yoga studio's new evening classes using React and Tailwind CSS. The design should feature calming earthy tones, clean typography, and responsive layout for both mobile and desktop. Include a hero section with a catchy headline about evening relaxation, a schedule preview section highlighting three evening class types, and a waitlist signup form with name and email input fields. Use placeholder state for the form so that clicking submit shows a temporary success message on the screen. Make sure all components look polished and professional with smooth spacing and Lucide icons.
- Hero section with soothing imagery description and clear call to action
- Evening class schedule cards showing class name, time, and brief description
- Waitlist form with name and email inputs and a submit button
- Local studio info section with placeholder address and hours
- Responsive design that looks great on mobile phones and desktop screens
Do not add complex animations or external routing for now.
Done when: The page renders fully in the browser with all sections visible and a working local form state.
2Connect Supabase DatabaseHook up the waitlist form to a real Supabase database to save user submissions permanently.
Connect the waitlist form on our yoga studio landing page to a new Supabase table so that real user signups are saved permanently. Create a table named waitlist with columns for id, created_at, full_name, and email. Update the form submission logic to insert the user's name and email into this Supabase table. Add proper error handling if the submission fails and a loading state on the button while saving.
- Integration with Supabase client to store form data
- Waitlist table creation in Supabase with correct columns
- Form submission handler that saves real data to the database
- Loading spinner on the submit button during network requests
- Friendly error or success banner based on the database response
Do not add user login or authentication requirements.
Done when: Entering a name and email in the form successfully saves the row to your Supabase table.
3Polish and Error StatesAdd input validation, empty states, and final visual polish to complete the v1 app.
Review the entire landing page and add final polish, input validation, and robust error handling. Ensure email inputs check for valid email formatting before submission and display clear inline error messages if fields are empty. Add a nice confirmation screen or card that replaces the form once a user successfully joins the waitlist. Double check all padding, font sizes, and mobile responsiveness across the entire page.
- Email format validation and required field checks
- Inline error messages for invalid form inputs
- Success state view that replaces the form after signing up
- Final visual polish including subtle shadows and hover effects
- Responsive layout check for small mobile screens
Do not add multi-language support or dark mode toggles.
Done when: You can visit the live preview, fill out the form with validation, and see your signup saved instantly.
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