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B2B Micro-Tools·8h build·Micro-SubscriptionBlueprint idea

Vendor Contract & Renewal Tracker

List your software subscriptions and vendor contracts once and get reminders before renewals and notice deadlines, plus a clear yearly spend summary.

Economics

Pricing example
$9/month (free: 10 contracts)
Daily math
67 businesses x $9/month = about $600/month, or $20/day.
Target if you hit the daily math
Target: $600 / month at about 67 subscribers

Audience and urgency

Audience: Small business owners, office managers and agency operations leads with many subscriptions and vendor contracts.

Urgency: Annual plans and contracts auto-renew, and many require notice weeks before the renewal date. Businesses notice only when the charge appears, after the chance to cancel or renegotiate has passed.

MVP scope

  • ✓ Contracts: vendor, cost, billing cycle, renewal date, notice period, auto-renew flag, owner, notes and file upload
  • ✓ Reminder emails before the notice deadline and before renewal
  • ✓ Yearly and monthly spend summary by category and owner
  • ✓ CSV import of an existing list
  • ✓ Stripe subscription

Omitted features

  • - Do NOT connect to bank or card accounts
  • - Do NOT analyse contracts with AI in Day 1
  • - Do NOT cancel or negotiate with vendors on the user's behalf

Suggested stack

Frontend
React + Tailwind CSS
Backend or API
Supabase (contracts, files) + scheduled reminder function + Resend
Payments
Stripe Billing
Hosting
Vercel or Netlify (free tier to start)

Repository metadata

Blueprint ID
vendor-renewal-tracker
Category ID
b2b_micro_utility
Monetization ID
micro_subscription

Day-one distribution

Channels

  • Reddit r/smallbusiness and r/sysadmin (follow rules)
  • Office manager and operations communities on LinkedIn
  • Free renewal tracker spreadsheet template

Reddit strategy

Share a free renewal tracker spreadsheet and explain notice periods with a simple example.

Cold outreach or directory hook

Offer agencies a free month in exchange for feedback on the import flow.

Search keywords

contract renewal tracker, subscription renewal reminder for business, software subscription tracker

One-shot master prompt

Build a "Renewal Tracker" web app in React with Tailwind CSS, Supabase and Resend.
Core requirements:
1. Contracts table: vendor, category, cost + currency, billing cycle (monthly/annual/multi-year/custom), start date, renewal date, notice period (days), auto-renew yes/no, owner email, notes, and file attachment (Supabase storage).
2. Computed fields: notice deadline (renewal date minus notice period), annualised cost, days left; colour-coded status.
3. Daily scheduled function emails owners 30 and 7 days before the notice deadline and 7 days before renewal.
4. Dashboard: upcoming deadlines, spend by category/owner (monthly and annual), CSV import with column mapping and CSV export.
5. Magic-link auth, free tier of 10 contracts, Stripe Billing ($9/month).

Comparable products

Published 2026-10-08.

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