Test more than the successful checkout.
Most payment implementations handle the happy path. Revenue and trust problems appear when webhooks arrive twice, payments fail later, subscriptions change or customers request refunds.
Who it is for
Built for products where trust matters.
- Apps launching paid plans
- Stripe or Dodo Payments integrations
- Subscription and credit-based products
- Marketplaces and usage-based services
What we review
A focused review of the complete risk surface.
Review checkout, subscriptions, webhooks, refunds, cancellations and entitlements before payment edge cases reach customers.
Webhook authenticity and idempotency
Subscription upgrades and downgrades
Refund, dispute and cancellation behavior
Entitlement synchronization
Customer-facing recovery and receipts
Issues we investigate
Specific findings, not generic warnings.
You receive technical and UX findings that connect provider events, backend state and the customer experience across the full payment lifecycle.
Duplicate webhook processing
A retried event creates duplicate credits, emails or records.
Refunded access remains active
The payment provider changes state but the application entitlement does not.
Client-trusted payment status
The browser can claim payment success without authoritative server verification.
Broken recovery
Users cannot resume after an interrupted checkout or delayed payment confirmation.
The deliverable
Evidence your team can act on.
You receive technical and UX findings that connect provider events, backend state and the customer experience across the full payment lifecycle.
Explore the sample report →Every finding includesSeverity and priorityEvidence and reproductionBusiness and user impactPractical remediation
Questions
Good to know.
Need help choosing a scope? Contact the audit team directly.
Do you make real payments?+
We agree on safe test methods before beginning and prefer sandbox or controlled low-value transactions.
Which providers can you review?+
We can review common hosted and API-based providers, including Stripe and Dodo Payments, subject to scope.
Are subscription changes included?+
The Comprehensive Audit covers upgrades, downgrades, cancellation, refunds and entitlement synchronization.
Ready when you are
Find the issues before users do.
Choose the audit depth that fits your application and receive a clear, prioritized report.
View audit plans →