TextVault

Fallback to SMS for mobile money when internet drops.

Score: 8.0/10BJMedium BuildReady to Spawn
Brand Colors

The Opportunity

Problem

Business owners in rural Benin experience unreliable internet connectivity that disrupts critical mobile money transactions and digital banking services.

Solution

TextVault generates secure, one-time SMS codes for transactions that users send to mobile money shortcodes, bypassing internet entirely. The dashboard tracks SMS confirmations via carrier callbacks and reconciles ledgers. Ideal for zero-data txn during outages.

Target Audience

Business owners in rural Benin dependent on mobile money and digital banking

Differentiator

SMS-native transactions with dashboard reconciliation, no app install needed beyond web setup.

Brand Voice

supportive

Features

SMS Template Generator

must-have15h

Create txn SMS ready to copy-paste or auto-send via device.

Confirmation Tracker

must-have22h

Parse incoming SMS replies to update status automatically.

Ledger Dashboard

must-have10h

Central view of SMS-confirmed txns with balances.

Shortcode Directory

must-have8h

Pre-loaded Benin mobile money USSD/SMS numbers.

Auto-SMS via Gateway

must-have20h

Optional Twilio integration for hands-free sending.

Recurring Payments

nice-to-have10h

Schedule daily SMS txns like supplier payments.

Export Reports

nice-to-have7h

PDF/CSV for accounting.

Multi-Number Support

nice-to-have8h

Track multiple phones/SIMs.

Total Build Time: 100 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
phonetextNo

sms_transactions

ColumnTypeNullable
iduuidNo
user_iduuidNo
sms_codetextNo
statustextNo
confirmed_attimestampYes

Relationships:

  • β€’ user_id -> users.id

sms_logs

ColumnTypeNullable
iduuidNo
user_iduuidNo
messagetextNo
directiontextNo
timestamptimestampNo

Relationships:

  • β€’ user_id -> users.id

API Endpoints

POST
/api/sms/generate

Create txn SMS template

πŸ”’ Auth Required
POST
/api/sms/confirm

Webhook for incoming SMS confirm

GET
/api/transactions

List user SMS txns

πŸ”’ Auth Required
POST
/api/twilio/send

Send SMS via gateway

πŸ”’ Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind + shadcn/ui
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
Twilio for SMS

Build Timeline

Week 1: Auth and dashboard

18h
  • βœ“ User signup
  • βœ“ Txn list UI

Week 2: SMS generator

22h
  • βœ“ Template creation
  • βœ“ Shortcode DB

Week 3: Confirmation parser

28h
  • βœ“ SMS webhook
  • βœ“ Status updates

Week 4: Integrations and polish

25h
  • βœ“ Twilio
  • βœ“ Payments
  • βœ“ Mobile UI

Week 5: Testing

15h
  • βœ“ Edge cases
  • βœ“ Reports

Week 6: Launch prep

12h
  • βœ“ SEO
  • βœ“ Landing
Total Timeline: 6 weeks β€’ 160 hours

Pricing Tiers

Free

$0/mo

Manual copy-paste only

  • βœ“20 SMS txns/month

Pro

$30/mo

1 phone

  • βœ“Unlimited SMS
  • βœ“Auto-gateway
  • βœ“Reports

Enterprise

$99/mo
  • βœ“All Pro
  • βœ“Multi-phone
  • βœ“API access

Revenue Projections

MonthUsersConversionMRRARR
Month 1804%$96$1,152
Month 66009%$1,620$19,440

Unit Economics

$12
CAC
$400
LTV
6%
Churn
88%
Margin
LTV:CAC Ratio: 33.3xExcellent!

Landing Page Copy

Internet Down? Send Money via SMS in Benin

TextVault turns your SMS into reliable mobile money transactions.

Feature Highlights

βœ“Instant SMS templates
βœ“Auto-confirmation tracking
βœ“No data needed
βœ“Secure codes

Social Proof (Placeholders)

"Works perfectly in villages - Mama Afi"
"Saved my business - Yaya trader"

First Three Customers

Post in Benin Telegram channels for traders and offer free Pro trial; partner with local mobile money agents for intros; run $50 FB ads targeting 'commercant Benin' with demo video.

Launch Channels

Product HuntIndie HackersTwitter #FintechAfricaBenin WhatsApp business groups

SEO Keywords

SMS mobile money BeninMTN MoMo SMS fallbackoffline payments SMS rural BeninFlooz USSD dashboard

Competitive Analysis

MTN MoMo USSD

mtn.com/bj
Per txn fee
Strength

Official

Weakness

No tracking/dashboard

Our Advantage

Centralized reconciliation and history

🏰 Moat Strategy

Aggregated SMS txn data creates outage heatmaps for Benin regions.

⏰ Why Now?

SMS usage remains 90% in rural Benin while data costs rise.

Risks & Mitigation

technicalmedium severity

SMS delivery delays

Mitigation

Retry and timeout logic

legallow severity

Telecom regulations

Mitigation

User-initiated SMS only

Validation Roadmap

pre-build5 days

Test SMS flow manually with 5 users

Success: 100% confirmation rate

mvp21 days

Deploy beta, 10 users

Success: 70% repeat usage

Pivot Options

  • β†’Pure USSD service
  • β†’Expand to voice calls
  • β†’General SMS ledger

Quick Stats

Build Time
160h
Target MRR (6 mo)
$1,800
Market Size
$4.0M
Features
8
Database Tables
3
API Endpoints
4