Subscription billing infrastructure
Every subscription.
One billing engine.
Kape Billing unifies app stores, resellers, PayPal, and card gateways into a single source of revenue truth — then recovers the payments other platforms lose.
KAPE ENGINE
- renewal recovered$12.99
- renewal declined$12.99
- retry scheduled02:00
- renewal recovered$12.99
Trusted by brands with 7M+ paying subscribers
Unified subscriptions
Your subscribers live everywhere. Your revenue shouldn't.
An in-app purchase on iOS, a reseller order through Cleverbridge, a PayPal agreement from 2019, a card checkout on your site — Kape Billing ingests them all into a single subscription model with one lifecycle, one event stream, and one report.
- One subscription model, whatever the platform of origin
- Cancel, refund, and sync flows per platform — handled for you
- Price points imported from each store into one catalog
- One webhook stream and one analytics layer across all of it
Apple App Store
Server notifications, receipt sync, price point import
Google Play
Real-time developer notifications via Pub/Sub
Cleverbridge
Reseller events, records, and full catalog sync
PayPal
Billing agreements and IPN, unified with the rest
Dunning workflows
Failed payments aren't lost. They're just not recovered yet.
Design recovery as a flow, not a config file. Watch a declined renewal below: it waits for the right local moment, retries on the next available payment method, and comes back green.
Visual flow builder
Waits, retries, conditions, loops, notifications, and terminals — composed on a canvas, validated before publish.
Time-aware retries
Retry in the customer's timezone, inside the window you choose — like 02:00–04:00 local, when balances refresh.
A/B experiments
Split traffic across published flow versions by percentage and let recovery rates pick the winner.
Targeting rules
Route by decline type, country, or any attribute — soft declines retry, hard declines escalate.
Versioned & safe
Draft, publish, and roll back flow versions. Running dunning cycles finish on the version they started with.
Recovery analytics
Recovery rate, outcomes, and step-frequency stats per flow version — measured, not guessed.
Checkout SDK
A checkout your team ships in an afternoon.
Drop-in React components with PCI-scoped hosted card fields, wallet buttons, and 3DS handled for you. Or skip code entirely — the hosted checkout page is themeable from the dashboard.
import { CheckoutProvider, CardFields,ApplePayButton, GooglePayButton, PayPalButton }from "@xvpn/renue-react";export function Checkout({ session }) {return (<CheckoutProvider session={session}><ApplePayButton /> <GooglePayButton /><PayPalButton /><CardFields /> // PCI-scoped hosted fields</CheckoutProvider>);}
Pro plan · yearly
$59.88
card fields render in isolated frames — PCI scope stays with us
Integrations
Route payments where they perform best.
Charge through Stripe, Braintree, or Pay.com. Screen risk with Forter and Riskified. Calculate tax with Avalara. Every integration is multi-tenant, credentialed per environment, and swappable without touching your code.
One factory. Nineteen connectors. Zero lock-in.
Stripe
Gateway
Braintree
Gateway
Pay.com
Gateway
PayPal
Gateway
Coinify
Gateway
App Store
Platform
Google Play
Platform
Cleverbridge
Platform
Avalara
Tax
Forter
Fraud & risk
Riskified
Fraud & risk
Turnstile
Fraud & risk
SendGrid
Messaging
Slack
Messaging
Zendesk
Support
Analytics & anomaly detection
Know your numbers moved before your customers do.
Revenue, churn, checkout and renewal success — sliced by any dimension, on a real-time columnar store. Seasonal-aware detectors scan every metric and every dimension pair, so a decline spike in one processor and one country doesn't hide inside a healthy global average.
Renewal success rate anomaly
criticalroot cause: processor=stripe × country=US
confidence 0.94 · 1,208 renewals affected · started 14:00 UTC
The whole operation
Billing is never just billing.
Everything around the invoice — promotions, tax, seats, compliance, approvals — is part of the same engine, not a bolt-on.
123 typed webhook events
Every state change in the system — invoices, transactions, dunning, seats, tax — delivered with signatures, retries, and a per-attempt delivery log.
Promotions & coupons
Fixed or percentage discounts, eligibility rules, two-phase redemption, and bulk coupon generation with custom code patterns.
Vouchers & gift cards
Prepaid value with full lifecycle control: redeemability validation, locking, commitments, and bulk issuance.
Tax, globally
Avalara integration plus manual registrations across 15 tax types — VAT, GST, US sales tax, and the long tail.
Seats & entitlements
Assign, suspend, and revoke seats per subscription item. Features and entitlements modeled in the catalog.
Customer portal
An embeddable self-serve portal: subscriptions, invoices, addresses, and adding payment methods — including wallets.
GDPR-grade PII deletion
Orchestrated erasure across every service, with request tracking and completion webhooks.
RBAC & maker-checker
Role-based permissions per domain, plus approval flows for sensitive operations — decided by a second pair of eyes.
Warehouse export
Chunked, retryable exports of any table to your own destinations. Your data stays yours.
AI-ready analytics
A built-in MCP server lets AI assistants query your billing reports directly — securely, with scoped keys.
Developer experience
Built by engineers who run it in production.
REST API, fully typed
An OpenAPI-documented gateway for customers, subscriptions, invoices, catalog, promotions, tax, and more.
SDKs generated, never stale
TypeScript clients generated from the API spec, plus React components for checkout and the customer portal.
A sandbox that behaves
A deterministic test gateway with Stripe-style test cards — including ones that fail until the nth dunning retry.
Webhooks with receipts
Signed deliveries, automatic retries, and a per-attempt log you can actually debug from.
Full API reference and SDK docs available on request.
See your revenue
in one place.
A 30-minute walkthrough with the team that built it — your platforms, your gateways, your dunning strategy.
Book a demo