FlexProto

Pay-per-prototype slots from pre-negotiated factory runs

Score: 7.5/10Saudi ArabiaMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Solo hardware founders face impossibly high MOQs from Chinese factories, making prototyping unaffordable without raising investor capital.

Solution

Book flex slots in ongoing factory runs for any hardware spec at 1-unit MOQ prices. We pre-negotiate bulk runs and sell slots to solos. Get prototypes in 2 weeks, no batching needed.

Target Audience

Solo bootstrapped founders manufacturing hardware products

Differentiator

Pre-paid factory run calendar with instant slot booking

Brand Voice

friendly

Features

Run Calendar

must-have12h

Browse upcoming factory runs by spec/type

Slot Booking

must-have15h

Reserve 1-10 units in a run instantly

Custom Spec Submit

must-have10h

Request new runs if no match

Inventory Viewer

must-have12h

See available slots real-time

Delivery Integration

must-have10h

Direct ship to you with tracking

Run Alerts

nice-to-have8h

Email/Slack for matching runs

Repeat Orders

nice-to-have6h

Auto-book same spec future runs

Cost Calculator

nice-to-have10h

Predict pricing by volume/spec

Total Build Time: 83 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
nametextYes
created_attimestampNo

Relationships:

  • one-to-many with bookings

runs

ColumnTypeNullable
iduuidNo
spec_typetextNo
total_slotsintNo
available_slotsintNo
price_per_unitintNo
start_datetimestampNo

Relationships:

  • one-to-many with bookings

bookings

ColumnTypeNullable
iduuidNo
user_iduuidNo
run_iduuidNo
unitsintNo
statustextNo

Relationships:

  • foreign keys to users(id) and runs(id)

requests

ColumnTypeNullable
iduuidNo
user_iduuidNo
spec_datatextNo
approvedboolNo

Relationships:

  • foreign key to users(id)

API Endpoints

GET
/api/runs

List available runs

POST
/api/bookings

Book slots in run

🔒 Auth Required
POST
/api/requests

Submit new run request

🔒 Auth Required
GET
/api/runs/:id

Run details and slots

🔒 Auth Required
GET
/api/bookings/me

User bookings

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind + Shadcn/UI + Framer Motion
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Supabase Edge Functions for alertsCron for slot updates

Build Timeline

Week 1: DB and calendar

22h
  • Runs CRUD
  • Calendar UI

Week 2: Booking flow

25h
  • Slot booking
  • Payments

Week 3: Requests and alerts

22h
  • Request form
  • Email notifications

Week 4: Dashboard and mobile

18h
  • User bookings view
  • Responsive

Week 5: Polish and seed data

15h
  • Fake runs for demo
  • Testing

Week 6: Launch features

12h
  • SEO landing
  • Analytics

Week 7: Optimizations

10h
  • Performance tweaks
Total Timeline: 7 weeks • 144 hours

Pricing Tiers

Free

$0/mo

1-2 units only

  • Browse runs
  • 1 booking/mo

Pro

$20/mo

None

  • Unlimited bookings
  • Priority slots
  • Alerts

Enterprise

$99/mo

None

  • All Pro + run requests priority
  • Bulk discounts
  • Custom specs

Revenue Projections

MonthUsersConversionMRRARR
Month 11202%$48$576
Month 69007%$1,260$15,120

Unit Economics

$45
CAC
$420
LTV
3%
Churn
88%
Margin
LTV:CAC Ratio: 9.3xExcellent!

Landing Page Copy

Book Prototype Slots Like Hotel Rooms - 1 Unit MOQ

Pre-negotiated factory runs: pay only for your units, ship fast.

Feature Highlights

2-week delivery
Any hardware
No MOQ hassle
Instant book
Solo-friendly

Social Proof (Placeholders)

"Prototyped enclosure for $50 - Alex, Founder"
"Perfect for iterations - Emma, Designer"

First Three Customers

Partner with 2 factories for initial runs, offer free slots to 20 Twitter hardware founders, convert via satisfaction surveys to paid subs.

Launch Channels

Product Huntr/SoloFounderTwitter #indiehackerElectronics newsletters

SEO Keywords

pay per prototype1 unit MOQ factoriesflexible hardware prototypingslot booking prototypes

Competitive Analysis

Per board
Strength

PCBs cheap

Weakness

PCBs only

Our Advantage

Any hardware types

Protolabs

protolabs.com
High premium
Strength

Speed

Weakness

Expensive for solos

Our Advantage

China prices + flex slots

🏰 Moat Strategy

Exclusive factory partnerships + run data moat

⏰ Why Now?

Factory utilization low post-supply chain shifts, solos scaling via no-code hardware tools

Risks & Mitigation

executionmedium severity

Factory slot oversell

Mitigation

Realtime sync + buffers

financialhigh severity

Upfront factory payments

Mitigation

Bootstrap with 1 factory, reinvest

marketmedium severity

Low run demand

Mitigation

Seed runs + marketing

Validation Roadmap

pre-build14 days

Negotiate 1 test run with factory

Success: Fills 50% via manual sales

mvp21 days

Live calendar with 3 runs

Success: 20 bookings

launch7 days

Scale to 10 runs/mo

Success: 50% utilization

Pivot Options

  • Subscription prototype boxes
  • Focus on enclosures/PCBs
  • 3D print slots only

Quick Stats

Build Time
144h
Target MRR (6 mo)
$1,800
Market Size
$1200.0M
Features
8
Database Tables
4
API Endpoints
5