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Local Business Tools·10h build·Micro-SubscriptionBlueprint idea

Digital Stamp Loyalty Card

A QR-based stamp card customers keep on their phone, with stamps given by staff, no app to install and no paper cards to lose.

Economics

Pricing example
$10/month per shop (first month free)
Daily math
60 shops x $10/month = $600/month, about $20/day.
Target if you hit the daily math
Target: $600 / month at 60 paying shops

Audience and urgency

Audience: Cafes, bakeries, bubble-tea shops, laundries, barbers and small retail shops in Malaysia and the region.

Urgency: Paper stamp cards get lost, faked or forgotten, and the shop learns nothing about repeat visits. Full loyalty apps are too expensive and complex for a single outlet.

MVP scope

  • ✓ Customer scans the shop QR to get a card saved in their browser, with optional email for recovery
  • ✓ Staff give stamps by scanning the customer's card QR from a logged-in staff phone (customers cannot stamp themselves)
  • ✓ Reward rules (e.g. 10 stamps = 1 free drink), redemption flow and a limit of stamps per visit
  • ✓ Shop dashboard: cards issued, stamps given, rewards redeemed per week
  • ✓ Stripe subscription with a 30-day free trial

Omitted features

  • - Do NOT build points-as-cash, cashback or stored value
  • - Do NOT send SMS or marketing blasts
  • - Do NOT build Apple/Google wallet passes in Day 1

Suggested stack

Frontend
Next.js + Tailwind CSS (PWA)
Backend or API
Supabase (shops, cards, stamp events) with signed card tokens
Payments
Stripe Billing
Hosting
Vercel or Netlify (free tier to start)

Repository metadata

Blueprint ID
digital-stamp-loyalty-card
Category ID
local_business_tools
Monetization ID
micro_subscription

Day-one distribution

Channels

  • Walk-in visits to cafes and bakeries in one neighbourhood with a working demo
  • Malaysian F&B and retail owner Facebook groups
  • Short video showing a stamp given in 3 seconds

Reddit strategy

Low Reddit fit; if used, share a guide on simple loyalty programmes for single-outlet shops in r/smallbusiness.

Cold outreach or directory hook

Set up a free card for the shop during the visit and print the counter QR on the spot.

Search keywords

digital stamp card for cafe, loyalty card app for small business malaysia, qr loyalty card

One-shot master prompt

Build a "Stamp Card" SaaS in Next.js with Tailwind CSS and Supabase.
Core requirements:
1. Shop setup (magic-link auth): name, logo, colour, reward rule (N stamps = reward text), max stamps per visit, and staff accounts.
2. Customer flow: scanning the shop QR opens /s/[shop] and creates a card stored in localStorage with a signed card token; the card page shows stamps and a card QR. Optional email to recover the card on a new phone.
3. Staff flow: logged-in staff page with a camera QR scanner (e.g. html5-qrcode) that reads the customer's card QR and adds a stamp; server checks the token, max stamps per visit and a 10-minute cooldown.
4. Rewards: when the stamp count reaches N, the card shows "Reward ready"; staff scan and confirm redemption, which resets the count and logs the event.
5. Dashboard with weekly cards, stamps and redemptions; Stripe Billing ($10/month, 30-day trial).

Comparable products

Published 2026-10-08.

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