Coffee and dessert shops
One or two locations, simple reward economics, and customers who can reasonably return within 7 to 30 days.
Product requirements document
ReviewStamp becomes a guided self-service repeat-revenue system.
Version 2.1 lets merchants configure, test, and launch by themselves while ReviewStamp provides templates, checks, previews, and guidance.
The product decision
Sell guided self-service, not implementation labour.
Launch a measurable repeat-visit programme yourself in under 30 minutes. ReviewStamp guides your reward, QR, staff access, consent wording, review request, and first campaign.
The merchant owns normal setup and operation. Human support resolves exceptions instead of performing each launch.
North star
Returns
Tracked returning members per active merchant per 30 days.
Beachhead Customer
300 weekly transactions
Enough traffic to test member signup and return behaviour without waiting months for evidence.
Paper or non-integrated till
Exclude merchants already satisfied with POS-integrated loyalty. ReviewStamp wins where replacement is unwanted.
Do not sell to everyone
Reject low-volume shops, rare-purchase businesses, complex chains, merchants unwilling to complete the staff launch checklist, and anyone requesting incentivised or selectively positive reviews.
Product Principles
Outcome before featuresRequired
Staff action under five secondsRequired
No customer app downloadRequired
Revenue estimates labelled honestlyRequired
Separate channel consentRequired
Neutral review requestsRequired
Merchant self-launch by defaultRequired
POS integrationLater
Complete Retention Loop
01Qualify merchant
Volume, till, reward, staff.
02Guided setup
Template, checks, test mode.
03Join customer
Browser card, clear consent.
04Verify visit
Scan, one tap, audit.
05Win back
Segment, message, attribute.
06Prove outcome
Returns, cost, contribution.
MVP Requirements
P0Guided onboardingSecure account, subscription checkout, resumable wizard, templates, validation, previews, launch checklist, and contextual help.
P0Merchant launchBranding, location, reward economics, QR links, programme status, printable launch pack.
P0Customer membershipMobile join, unique QR, progress, visit history, channel consent, export, and deletion workflow.
P0Staff operationPersistent scanner, staff identity, one-tap validation, reversal, cooldown, and immutable event log.
P0CampaignsInactive-member filters, templates, test send, automated email, unsubscribe handling, suppression, send limits, and attribution.
P0ReviewsNeutral verified-visit request, frequency cap, no reward connection, no sentiment gate, and auditable history.
P0ReportingMembers, returning members, rewards, campaign returns, review activity, estimated revenue, cost, and contribution.
P1AutomationSMS delivery, scheduled inactivity campaigns, customer import, location comparisons, and Wallet passes.
P2ScalePOS integrations, multi-location administration, partner accounts, public API, and reseller enablement.
Measurement System
Acquisition
- Member signup rate.
- Eligible transactions.
- Consent rate by channel.
Behaviour
- Staff usage by trading day.
- Thirty-day member return rate.
- Campaign-attributed returns.
Economics
- Estimated attributed revenue.
- Reward and campaign cost.
- Estimated contribution created.
Commercial Model
Starter
GBP 49/month or GBP 490/year
One location, guided onboarding, loyalty, staff access, reviews, one email campaign, and core reporting.
Growth
GBP 99/month or GBP 990/year
Two locations, automated win-back campaigns, deeper segments, contribution reporting, and priority support.
Assisted Setup
GBP 149 one time
A setup review and one launch call for merchants who request help. Never required for normal activation.
Six-month calculator
Pressure-test annual self-service sales
Starter annual cashGBP 9,800
Growth annual cashGBP 9,900
Total collected cashGBP 19,700
Validation Before Scale
Fourteen-day funnel test
- 100 qualified merchants reach the product.
- Thirty create an account.
- Fifteen configure the programme without a call.
- Five complete checkout and self-launch.
- Every abandoned setup step is recorded.
Thirty-day product thresholds
- Setup-to-test-ready median below 30 minutes.
- 50% of qualified trials finish without intervention.
- 10% eligible-transaction signup rate.
- Activity on 70% of staffed trading days.
- 20% member return rate where cycle supports it.
- Two of three merchants continue paying.
- Under 15 support minutes per merchant monthly.
Pivot conditions
Stop expanding the product if 100 qualified merchant visits do not produce five paid self-service launches, most merchants need a setup call, staff cannot validate in five seconds, or the existing POS already solves the complete job.
Launch decision gate
Production investment requires evidence.
Ten merchants have paidGate 1
Seven launched without a setup callGate 2
Five merchants completed 30 daysGate 3
Staff active on at least 70% of trading daysGate 4
Four of five eligible merchants continue payingGate 5
Post-launch support stays below 15 minutes monthlyGate 6