Do You Need a PRD for Lovable or Bolt? A Plain-English Guide
By the Flowmaps team · Updated · 4 min read
You don't need a formal PRD to build with Lovable, Bolt or Cursor, but you do need what a PRD contains: what the app is for, which features it has, how each one should work, and the order to build them in. A short, clear plan gives AI builders that information without the paperwork. This guide explains the difference, and what to write instead.
What is a PRD?
PRD stands for "product requirements document". In software companies, it's the document that says what a product or feature should do, before anyone builds it. A typical PRD has:
- The problem and who has it
- The goal: what success looks like
- The features, often as "user stories" ("As a customer, I want to…")
- Requirements for each feature: what it must and mustn't do
- What's out of scope, so nobody builds extra things
PRDs are written for teams of people who need to agree. They can be long, because they also cover meetings, deadlines and sign-offs.
Why AI builders still need the information
An AI app builder is like a very fast developer who has never met you. It doesn't know your customers, your rules, or what you consider "done". If you don't tell it, it guesses.
So the content of a PRD matters a lot. What doesn't matter is the format: an AI builder doesn't need a 15-page document with sign-off sections. It needs clear, small instructions it can act on.
The problem with giving an AI builder a long PRD
If you paste a long PRD into Lovable or Bolt and say "build this", the builder has to decide by itself what to build first and how the pieces connect. You get a lot of code at once, which is hard to check, and mistakes are mixed into everything.
AI builders do their best work on one clear task at a time. A long document is the opposite of that.
What to write instead: a plan in three layers
1. The idea, in one or two sentences. Who is it for, and what can they do?
A tool where small agencies see each client's projects, invoices and next steps in one place.
2. A feature list, in build order. Short lines starting with who does what:
- Team members log in
- List of clients
- Projects per client
- Invoices per client
3. One instruction per feature, written when you're about to build it. Who uses it, what they see, what's saved, who may see it, and what "done" looks like:
Projects per client. On a client's page, team members see the client's projects with name, owner, status and due date, newest first. They can add a project with those four fields. Only logged-in team members can see projects. Done when a new project shows up on the right client's page right after saving.
That's everything a PRD would tell the builder about this feature, in a form it can build straight away.
How Flowmaps does this for you
Flowmaps turns your idea into exactly these three layers. You describe the idea; it suggests the features (including the ones people forget), puts them in order on a visual map, and writes the instruction for each feature in the style your builder understands best: screens and actions for Lovable and Bolt, and more technical detail for Cursor and Claude Code.
You can see what that looks like in the example maps.
When a real PRD does make sense
Write a fuller document when:
- Several people have to agree before anything is built
- Rules apply, like privacy, health or financial regulations, that need careful review
- Someone else will build the app and you need a clear agreement
Even then, you'll still hand the AI builder one feature at a time.
Frequently asked questions
What does PRD stand for?
Product requirements document: a description of what a product should do, written before it's built.
Can I just ask ChatGPT to write a PRD and paste it into Lovable?
You can, but it usually works less well than building in small steps. Use the document to understand your app, then give the builder one feature at a time.
How detailed should each feature instruction be?
Detailed enough that someone who has never seen your idea could build it and check it: who uses it, what they see, what's saved, who may see it, and what "done" means. Usually one paragraph.
Do I need user stories?
No. "Owners can book a walk" says the same thing as "As an owner, I want to book a walk so that…", and it's easier to read.