StockFlow

Visual kanban boards for inventory that auto-balance production and prevent stockouts or excess.

Score: 7.9/10IndiaMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Small manufacturing entrepreneurs face cash flow crises due to poor inventory management and overproduction.

Solution

StockFlow provides drag-and-drop kanban boards to visualize inventory flow from raw materials to finished goods. It automatically calculates production batches based on real-time demand signals and triggers waste alerts for overproduction. Manufacturers optimize workflows visually, reducing cash tied up in unsold stock.

Target Audience

small manufacturing entrepreneurs

Differentiator

Kanban-first interface designed for shop floor teams, not spreadsheets.

Brand Voice

supportive

Features

Kanban Inventory Board

must-have25h

Visual drag-drop for stock stages.

Auto-Batch Calculator

must-have15h

Suggests production runs to match demand.

Waste Alerts

must-have12h

Flags potential overproduction in pipeline.

Demand Signal Input

must-have10h

Quick entry for orders/sales.

Stock Level Dash

must-have18h

Overview metrics and trends.

Team Collaboration

nice-to-have8h

Multi-user board access.

Custom Workflows

nice-to-have7h

User-defined stages.

Barcode Scanner

nice-to-have12h

Mobile scan for stock moves.

Total Build Time: 107 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
workspace_iduuidYes

workspaces

ColumnTypeNullable
iduuidNo
user_iduuidNo
nametextNo

Relationships:

  • user_id references users(id)

inventory_items

ColumnTypeNullable
iduuidNo
workspace_iduuidNo
nametextNo
quantityintNo
stagetextNo

Relationships:

  • workspace_id references workspaces(id)

orders

ColumnTypeNullable
iduuidNo
workspace_iduuidNo
quantityintNo
created_attimestampNo

Relationships:

  • workspace_id references workspaces(id)

API Endpoints

POST
/api/workspaces

Create workspace

🔒 Auth Required
GET
/api/inventory

Fetch board items

🔒 Auth Required
POST
/api/inventory/move

Move item to stage

🔒 Auth Required
GET
/api/batch-suggest

Get production batch recs

🔒 Auth Required
GET
/api/alerts

Fetch waste alerts

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind CSS + React DnD
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Dnd Kit for kanbanZustand for state

Build Timeline

Week 1: Auth and workspace setup

20h
  • Auth
  • Workspaces
  • Basic inventory CRUD

Week 2: Kanban board core

35h
  • Drag-drop UI
  • Stage management

Week 3: Logic for batches/alerts

30h
  • Batch calc
  • Alerts
  • Orders input

Week 4: Payments and mobile

25h
  • Stripe
  • Responsive design
  • Dashboard

Week 5: Testing/launch

15h
  • E2E tests
  • SEO
  • PH prep

Week 6: Nice-to-haves

10h
  • Team collab
  • Custom stages
Total Timeline: 6 weeks • 135 hours

Pricing Tiers

Free

$0/mo

50 items

  • 1 workspace
  • Basic kanban
  • Manual alerts

Pro

$25/mo

Unlimited

  • Unlimited workspaces
  • Auto-batches
  • Waste alerts
  • Exports

Enterprise

$99/mo

Unlimited

  • All Pro + Teams
  • API
  • Custom alerts

Revenue Projections

MonthUsersConversionMRRARR
Month 1804%$80$960
Month 65009%$1,125$13,500

Unit Economics

$18
CAC
$450
LTV
5%
Churn
90%
Margin
LTV:CAC Ratio: 25.0xExcellent!

Landing Page Copy

Visual Inventory Flow: No More Overproduction Headaches

Kanban boards that auto-balance your production for steady cash flow.

Feature Highlights

Drag-drop simplicity
Smart batch sizing
Instant waste alerts
Shop floor ready
Cut excess stock 25%

Social Proof (Placeholders)

"'Transformed our floor chaos.' - Tom, MetalWorks"
"'Visual cash saver.' - Lisa, Assembly Ltd."

First Three Customers

Share demo video in manufacturing Facebook groups and LinkedIn. Run $50 Reddit ads targeting 'small manufacturer inventory'. Cold email 15 from ThomasNet directory with free pro trial.

Launch Channels

Product Huntr/manufacturingLinkedInFacebook GroupsHacker News

SEO Keywords

kanban inventory for manufacturersvisual production schedulingsmall business inventory kanbanmanufacturing waste reduction software

Competitive Analysis

Trello for Inventory

trello.com
$5/user
Strength

Familiar UI

Weakness

No manufacturing logic

Our Advantage

Built-in production auto-calc

$49+/mo
Strength

ERP features

Weakness

Complex setup

Our Advantage

Instant visual kanban

🏰 Moat Strategy

Network effects from shared workspace templates in community.

⏰ Why Now?

Post-pandemic labor shortages demand simple visual tools for floor teams.

Risks & Mitigation

technicallow severity

Drag-drop perf issues at scale

Mitigation

Virtualized lists

marketmedium severity

Preference for spreadsheets

Mitigation

Import/export support

financiallow severity

Slow conversions

Mitigation

Freemium ramp

Validation Roadmap

pre-build5 days

Survey 15 manufacturers on tools used

Success: 60% hate spreadsheets

mvp21 days

10 beta users track engagement

Success: Daily active 70%

growth60 days

Content marketing, 1k visitors

Success: 5% signup

Pivot Options

  • General kanban for ecom
  • IoT integration pivot
  • Accounting firm tool

Quick Stats

Build Time
135h
Target MRR (6 mo)
$4,000
Market Size
$4000.0M
Features
8
Database Tables
4
API Endpoints
5