Welcome to Kwit

Subscription billing platform for SaaS - products, invoices, dunning, and developer APIs

Kwit is a payment-provider-agnostic subscription billing platform. You own products, subscriptions, invoices, and dunning; processors such as zahls.ch handle card capture.

What Kwit does

Products & pricing - Flat, usage-based, and tiered models with billing intervals
Subscriptions - Lifecycle, renewals, trials, and cancellation
Invoicing - Generation, PDF delivery, Swiss QR Bill support
Dunning - Automated retries and recovery when payments fail
Usage billing - Meters, event ingestion, credits, and meter prices on products
Developer surface - REST API v1, @kwit/sdk, webhooks, hosted checkout & portal

Integration model

Your backend  →  Kwit API (Bearer kwit_live_…)  →  Payment provider
                      ↓ webhooks
Your backend  ←  subscription.* / invoice.* events

End-users use hosted checkout and the customer portal; your app stays in control via API keys and webhooks.