Sell software online with
license automation
Ship licenses, subscriptions and builds from one storefront. cinauth generates and delivers license keys the moment payment clears — and everything is scriptable through a REST API.
License keys that deliver themselves
Instant key delivery
License keys are generated and emailed the instant payment is confirmed — no manual fulfillment, ever.
REST API for everything
Create products, check licenses and pull orders programmatically with a documented REST API and API keys.
Your storefront, your brand
Host on slug.cinauth.com or your own custom domain with themes you control — no code required.
License keys & serials
Upload keys in bulk or auto-generate them. Each purchase delivers a unique license tied to the order.
Subscriptions & renewals
Charge monthly or yearly for software plans and let renewals run themselves.
Webhooks & REST API
Listen for payments and trigger your own installer, updater or activation server.
Global payments
Cards, PayPal, Apple and Google Pay, SEPA, Klarna and crypto — settled into your own accounts.
Fraud protection
Risk scoring and blocklists stop stolen cards before they become chargebacks.
Customer accounts
Buyers log in to re-download files, recover keys and track orders without contacting support.
Everything a software seller needs
- Automated license key delivery
- Documented REST API and webhooks
- Subscription and one-time billing
- Instant file delivery for builds and installers
- Custom domain and full theming
- Zero platform fees on your sales
Start selling your software today
Create your store, upload your keys and connect payments — your first sale can happen today.
Start free