Stop speccing.
Start shipping prototypes.
Validate your ideas with working prototypes in hours — not static Figma files. Show stakeholders something real. Get feedback that actually changes what you build.
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How it works
Write your spec or paste user stories
Paste your PRD, user stories, or a rough bullet list. Dubleu reads it and starts planning the prototype.
Dubleu builds the prototype
Agent Mode works through the spec — UI, API, database, auth — while you watch the task plan tick off in real time.
Share the live URL
A real deployed URL, ready in minutes. Send it to design, engineering, or leadership — no tools required on their end.
Collect and act on real feedback
The feedback widget is on by default. Annotated screenshots land in your chat. Paste them to Dubleu to fix instantly.
Built for how PMs actually work
From discovery to decision — faster.
Every feature is designed around the PM workflow — validate, share, collect feedback, iterate.
Working prototypes in hours
Describe the feature. Dubleu builds a real, clickable, deployed prototype — not a static mockup.
Share a live URL
Send stakeholders a link they can open in any browser. No Figma account, no invites, no friction.
Real data included
Hook up a Supabase database in one message. Your prototype shows real queries, real responses.
User feedback built in
The built-in feedback widget lets users annotate the live prototype and send it straight to your chat.
Iterate from feedback
Paste feedback into chat and Dubleu ships the change. From feedback to deployed update in minutes.
Stakeholder alignment
Real products make alignment conversations shorter. Show — don't tell. Everyone gets it immediately.
Figma prototype vs. Dubleu prototype
Figma / static mockup
- ✕Not interactive — users click dead zones
- ✕Requires a Figma account to view
- ✕Can't test real user flows with data
- ✕Engineering has to re-build it from scratch
- ✕Feedback is verbal or in comments
Dubleu prototype
- Real interactions — real database queries
- Sharable via URL — no account needed
- Actual auth, forms, and API routes
- Engineering can ship it directly to production
- Annotated screenshot feedback in your chat
PM stories
Validate faster. Ship smarter.
“I built a fully interactive prototype overnight. The stakeholder meeting was a completely different conversation — they were reacting to a real product, not a slide deck.”
Priya Nair
Senior PM, Growthco
“We used to wait 3 sprints to validate an idea. Now I have a working prototype before the next standup. The team ships what we validate, not what we guess.”
Carlos Mendez
Group PM, Scalepath
“Being able to hand a live URL to a user for a 30-minute test session instead of walking them through Figma changed everything about how we do discovery.”
Yui Nakamura
Principal PM, Frameloop
PM questions
Do I need any technical background?
None at all. If you can write a user story, you can build a prototype with Dubleu. Describe the feature in plain English and the agent handles the rest.
How realistic are the prototypes?
They're real working apps — Next.js with TypeScript, a real database, real API routes. Not clickable mockups. Users interact with them the same way they would a production product.
Can I share it with external users for research?
Yes. Every deployed project gets a public URL. You can share it with anyone — no Dubleu account required to view or interact with it.
What if engineering needs to take over the prototype?
Hand them the project link. It's standard Next.js + Supabase code — any developer can read, extend, or deploy it without any Dubleu-specific knowledge.
Your next prototype is 4 hours away.
Open Dubleu, paste your user stories, and share a live URL with your team before the end of the day.
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