Stop describing the product. Show it.
Master turns the spec you already wrote into a working, data-backed build — in time for this week's review, not next quarter's.
What product teams actually do with it.
Specs that run
Paste the PRD and get a working product instead of another Figma round. Reviews argue about behaviour, not rectangles.
Research on real software
Put a live, data-backed build in front of five users on Tuesday and rewrite the roadmap on Wednesday.
Two options, one meeting
Build both variants of the contested flow and let the room click through them before engineering commits a sprint.
Discovery that ends in software.
Every round of feedback lands in the same artifact, so nothing gets lost in translation between the doc, the mock and the ticket.
- Step 1
Drop in the brief
Master reads the spec and proposes routes, data model and the states you forgot to write down.
- Step 2
Click it, not read it
A real app with a real database — empty states, validation and edge cases included.
- Step 3
Test with users
Share a preview link. Change copy, order and logic live during the session.
- Step 4
Hand over cleanly
Export to GitHub so engineering starts from working code, not a slide.
"I stopped writing 12-page PRDs. I build the thing, the team clicks it, and we argue about something real."
"Our discovery cycle went from six weeks to eight days. Engineering thanked us — they get working code, not a wish list."
Prompts product managers reach for.
Questions we hear from PMs.
Does this replace my engineering team?+
No. It removes the six weeks between an idea and something worth an engineer's time. Everything Master builds is standard React and Postgres, so your team owns it from day one.
Can I use our real data?+
Yes. Connect your database or import a CSV — prototypes behave like the product, including permissions and empty states.
How do stakeholders review it?+
Send a preview link. No install, no test account, comments land straight in the project.