Build Concept
Product concept brief + working interactive prototype + deployed URL + source code. $599. About 5 days. $599.
No calls. No contracts. Delivered in ~5 days.
The real problem
You've been describing this idea for months. To friends, to potential co-founders, maybe to investors. Their response is always some version of 'sounds interesting' — which means they can't picture it.
Ideas have shelf lives. Execution speed is a competitive advantage. The gap between explaining an idea and showing an idea is the gap between 'interesting' and 'invested.'
Dev agencies quote $30K-$100K for an MVP. Freelancers on Upwork are a lottery. No-code tools lock you into a platform. And you've been planning for 6 months without writing a line of code.
A prototype reveals what works before the real investment begins.
The cost of waiting
Every week spent planning is a week a competitor could be building.
Ideas have shelf lives. Execution speed is a competitive advantage.
Investors fund demos, not decks.
A working prototype is worth 100 slides. The Concept tier gets you to demo-ready.
The $599 test saves the $50K mistake.
Building the wrong thing fast is still building the wrong thing. A prototype reveals what works before the real investment begins.
The options you've already considered
Building the whole thing before validating is the most expensive way to find out the idea needs changes.
Fast but platform-locked. Can't hand the code to a developer. Looks like a no-code app.
Quality lottery. No product thinking — just execution of what you describe, even if what you describe needs refinement.
Another month of planning won't reveal what 5 days of prototyping will.
A different model
Product thinking before code.
The Product Concept Brief challenges the idea, not just documents it. Assumptions are identified before building.
Real code, not no-code.
React/Vite. Hand the code to any developer for the next phase. No platform lock-in.
Working prototype in 5 days.
Not wireframes. Not mockups. An interactive prototype someone can click through and react to.
Built by a PM, not just a developer.
Every prototype is informed by product methodology — user flows, demo-critical moments, and what needs to be proven.
No calls. No contracts. Full ownership.
The starting point
The Brief Chat is a guided conversation — not a form, not a phone call — that captures the business, customers, goals, and what makes it different. About 20 minutes.
Most people struggle to explain their business clearly. The Brief Chat draws it out — the right questions, in the right order, with room to ramble. The ramble becomes the strategy.
20 minutes → ~5 days later, professional deliverables land in the inbox.
What the Brief Chat covers
What your product does and who it's for
The core user flow — the one thing a user must be able to do
What you've tried so far (sketches, mockups, code)
What success looks like for this prototype
Known constraints or requirements
Anything else that would help — in your own words
What's included
Every deliverable is built from the Brief Chat — tailored to your idea and goals.
Problem statement, target user, proposed solution, key assumptions, success criteria. Challenges the idea — doesn't just document it.
One core user flow, fully interactive, deployed. Not wireframes — a working prototype someone can click through.
Shareable immediately. Show investors, co-founders, users, or friends.
What works, what to test, recommended changes, what v2 should address.
Full React/Vite codebase. GitHub repo. Hand to any developer for the next phase.
Agencies and consultants charge $11,500 – $37,500 for these deliverables.
Ironbrev delivers all of this for $599 — because the model is different, not the quality.
No calls. No contracts. Delivered in ~5 days.
The math
If the prototype validates the idea, it just saved months of building the wrong thing. If it reveals the idea needs changes, it just saved $50K of building the wrong version. Either outcome: $599 well spent.
At $599, the downside is $599. The upside is a validated product direction.
From purchase to delivery
Purchase
Day 1Pay via Stripe. 2 minutes.
Brief Chat
Day 1Complete the guided conversation. About 20 minutes.
Research + Build
~5 daysDeliverables researched and built.
Delivery + Refinement
Day 5+Everything lands in your inbox. 14-day refinement window.
The entire process takes less time than one round of freelancer interviews.
No calls. No contracts. Delivered in ~5 days.
What happens next
Within 1 hour: Brief Chat link arrives via email.
Brief Chat (~20 min): Guided conversation.
Within ~5 days: Deliverables in inbox.
Then: 14 days to request changes.
Need multiple flows, persistence, or real logic? Build Demo ($1,799).
Need a full application experience with auth and database? Build Pilot ($3,499).
Need a website, not an app prototype? Launch packages from $349.
Just need to see your idea exist? This is exactly what Build Concept was built for.
Common questions
Compare
| No-code | Freelancer | Dev Agency | Ironbrev | |
|---|---|---|---|---|
| Product brief | ✗ | ✗ | Maybe | ✓ Included |
| Interactive prototype | Limited | Varies | ✓ | ✓ Core flow |
| Real code (React) | ✗ | Varies | ✓ | ✓ Full codebase |
| Product thinking | ✗ | ✗ | Varies | ✓ PM-led |
| Cost | Free + time | $5–20K | $30–100K | $599 |
| Timeline | Weeks | 2–4 wks | 2–4 months | ~5 days |
| Lock-in | Platform | None | None | None |
Want more?
Demo ($1,799) extends Concept into a multi-flow working prototype with real logic and persistence. Pilot ($3,499) builds the complete application experience. Code carries over — nothing is rebuilt from scratch.
14-day refinement
Request changes anytime
Human support
hello@ironbrev.com
Full ownership
Code + all PDFs
Product concept brief + interactive prototype with core user flow + deployed preview URL + source code. The fastest path from idea to working demo.
Get my Build Concept package — $599No calls. No contracts. ~5 days. Full ownership.
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Get an exclusive offer — valid for 30 days.
P.S. You've been describing this idea for months. For $599 and about 5 days, people can experience it instead.