VunaLink.com

Lock in buyers before you plant - end spoilage at the source

Score: 7.8/10TZMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Tanzanian agribusiness entrepreneurs produce perishable goods before securing buyers, leading to unsold inventory, spoilage and lost capital.

Solution

VunaLink lets Tanzanian small-scale producers list planned perishable crops weeks ahead with expected harvest windows. Buyers browse, negotiate, and place binding commitments with mobile money deposits held in escrow. Farmers only grow what has already been pre-sold, eliminating unsold inventory and lost capital while giving buyers price and supply certainty.

Target Audience

Tanzanian small-scale agribusiness entrepreneurs and producers dealing in perishable goods

Differentiator

The only pre-harvest commitment marketplace built exclusively for Tanzanian perishables with mobile-money escrow, binding contracts, and Swahili-first UX that turns production into a demand-driven activity.

Brand Voice

supportive

Features

Phone-first Onboarding

must-have25h

Register and verify using Tanzanian mobile number with SMS OTP

Advance Listing Creator

must-have40h

Farmers post planned crops, quantities, harvest window, photos and desired price

Smart Buyer Marketplace

must-have35h

Buyers filter and discover listings by crop, location, volume and date

Binding Commitment Engine

must-have50h

Buyers commit quantities and pay deposit; creates enforceable digital contract

Flutterwave Escrow

must-have45h

Secure deposit and final payment handling with automatic release on delivery

Unified Dashboard

must-have30h

Track all listings, commitments, payments and upcoming harvests

Push + SMS Alerts

must-have25h

Real-time notifications for matches, approaching harvests and payment events

In-app Chat

nice-to-have30h

Direct messaging between producers and buyers with translation hints

Price Suggestion Engine

nice-to-have35h

Recommends pricing based on historical Tanzanian market data

Weather Overlay

nice-to-have20h

Shows local forecast impact on planned harvest dates

AI Demand Predictor

future65h

Forecasts likely demand per crop per region

Total Build Time: 400 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
phonetextNo
roletextNo
full_nametextYes
villagetextYes
regiontextYes
created_attimestampNo

Relationships:

  • listings.producer_id -> users.id
  • commitments.buyer_id -> users.id

listings

ColumnTypeNullable
iduuidNo
producer_iduuidNo
crop_typetextNo
quantity_kgintNo
price_per_kg_tzsintNo
harvest_window_starttimestampNo
harvest_window_endtimestampNo
statustextNo
created_attimestampNo

Relationships:

  • commitments.listing_id -> listings.id

commitments

ColumnTypeNullable
iduuidNo
listing_iduuidNo
buyer_iduuidNo
committed_kgintNo
deposit_tzsintNo
statustextNo
contract_pdf_urltextYes
created_attimestampNo

Relationships:

  • transactions.commitment_id -> commitments.id

API Endpoints

POST
/api/listings

Create new advance listing

🔒 Auth Required
GET
/api/listings

Search and filter listings

POST
/api/commitments

Create commitment and payment intent

🔒 Auth Required
POST
/api/webhooks/flutterwave

Handle payment confirmation and release escrow

GET
/api/dashboard

Fetch personalized dashboard data

🔒 Auth Required

Tech Stack

Frontend
Flutter with Riverpod
Backend
Node.js + Express
Database
PostgreSQL
Auth
Supabase Auth (phone)
Payments
Flutterwave
Hosting
Railway
Additional Tools
OneSignalCloudinaryPDF-Lib

Build Timeline

Week 1: Foundation and auth

38h
  • Flutter app skeleton
  • Supabase project + phone auth
  • Basic onboarding flow

Week 2: Listings CRUD + marketplace

52h
  • Postgres schema
  • Listing API + Flutter UI
  • Search and filter screen

Week 3: Commitment and payments

48h
  • Commitment flow
  • Flutterwave integration
  • Escrow logic

Week 4: Dashboard, notifications, contracts

45h
  • Dashboard screens
  • Push + SMS alerts
  • Digital contract generation

Week 5: Polish, localization, testing

35h
  • Swahili translation
  • Beta testing with 15 farmers
  • Landing page
Total Timeline: 5 weeks • 265 hours

Pricing Tiers

Starter

$0/mo

4 listings per month

  • Up to 4 listings/month
  • Basic marketplace access
  • Notifications

Pro

$35/mo

None

  • Unlimited listings
  • Price advisor
  • In-app chat
  • Priority visibility
  • Contract tools

Co-op

$89/mo

None

  • Everything in Pro
  • Group listing tools
  • Analytics
  • Dedicated WhatsApp support
  • White-label contracts

Revenue Projections

MonthUsersConversionMRRARR
Month 122011%$847$10,164
Month 61,45017%$8,645$103,740

Unit Economics

$14
CAC
$280
LTV
6%
Churn
85%
Margin
LTV:CAC Ratio: 20.0xExcellent!

Landing Page Copy

Plant Only What You've Already Sold

Pre-commit buyers and deposits before you sow. Built for Tanzanian smallholders dealing in tomatoes, avocados, leafy greens and other perishables.

Feature Highlights

List planned crops weeks ahead
Get deposits before planting
Mobile money escrow protection
Simple Swahili interface
Stop spoilage before it starts

Social Proof (Placeholders)

"I sold 800kg of tomatoes before I even planted them. First time in 12 years. - Mama Fatuma, Morogoro"
"The deposit gives me confidence to grow exactly what the buyer wants. - Juma, Arusha"

First Three Customers

Visit three large farmer cooperatives in Morogoro and Kilimanjaro with a tablet demo. Offer lifetime Pro at $15/month for the first 25 signups. Partner with two Dar es Salaam wholesalers to seed the buyer side and guarantee initial demand. Run hyper-local Facebook ads in Swahili targeting 'kilimo' and 'mazao' groups.

Launch Channels

Tanzanian Farmer Facebook GroupsWhatsApp Agribusiness CommunitiesProductHuntLocal radio (Radio Free Africa)Partnerships with Sokoine University extension officers

SEO Keywords

pre-sell crops Tanzaniafind buyers before plantingsecure deposits for farm produceTanzania perishable goods marketplaceavoid unsold harvest

Competitive Analysis

Enterprise subscriptions
Strength

Strong market price data across East Africa

Weakness

No binding pre-harvest commitments or escrow

Our Advantage

Direct transaction workflow with deposits that actually prevents farmers from over-producing

Commission per order
Strength

Large buyer network in Kenya

Weakness

Primarily Kenya-based and focuses on post-harvest collection

Our Advantage

Tanzania-first, pre-production focus, and lighter mobile experience for small producers

🏰 Moat Strategy

Strong network effects once critical mass of producers and institutional buyers are on platform. Proprietary dataset of pre-harvest commitments becomes valuable for regional forecasting and can be licensed later.

⏰ Why Now?

Mobile money (M-Pesa, Tigo Pesa, Airtel Money) penetration exceeds 65% in Tanzania. Cheap Android smartphones are widespread even in rural areas. Government Digital Agriculture Strategy launched in 2023 creates policy support.

Risks & Mitigation

markethigh severity

Farmers may be reluctant to adopt new digital workflow

Mitigation

Heavy focus on in-person demos at cooperatives and voice/SMS fallback features

executionhigh severity

Chicken-and-egg problem between producers and buyers

Mitigation

Bootstrap with 8-10 committed wholesale buyers first before broad farmer acquisition

legalmedium severity

Contract enforceability in rural areas

Mitigation

Start with small deposit amounts and build reputation; partner with local ag extension offices

Validation Roadmap

pre-build12 days

Conduct 25 farmer + 12 buyer interviews in Morogoro and Arusha

Success: ≥70% say they would use and pay for pre-commitment feature

mvp45 days

Closed beta with 40 producers and 8 buyers

Success: ≥12 binding commitments with deposits in first 30 days

Pivot Options

  • Pivot to post-harvest logistics layer on top of commitments
  • White-label the platform for large cooperatives
  • Expand into input financing using commitments as collateral

Quick Stats

Build Time
265h
Target MRR (6 mo)
$7,800
Market Size
$7.2M
Features
11
Database Tables
3
API Endpoints
5