MarketplacePolar
Polar
Developer-native merchant of record with usage billing & great DX.
OfficialBilling & paymentsBeta
Overview
Polar is a developer-native merchant of record with first-class usage-based billing and an open-source heart. It is built for teams selling to developers (clean APIs, metered usage, and digital benefits) while still handling tax as the seller of record.
CashSDK records Polar orders, renewals included, and maps subscriptions to entitlements, so the usage charges billed on those orders line up next to your in-app revenue.
CashSDK
Syncs & settles
Polar
catalog.syncedsubscription.activecharge.settledentitlement.granted
What you can do
Usage-based billing
Polar meters and bills consumption. The orders it bills land in your CashSDK revenue.
Merchant of record
Polar sells as the merchant of record and handles international sales tax and VAT.
Access follows the subscription
Active, canceled and revoked Polar subscriptions grant and end CashSDK entitlements.
Developer-first API
A modern, well-documented API that pairs naturally with an agent-built stack.
How it works
- 1
Connect your account
Add Polar from the CashSDK dashboard. Credentials are stored encrypted, never in your app binary.
- 2
Map your products
Point each Polar product or price at a CashSDK product, so a purchase resolves to the same entitlement everywhere.
- 3
Reconcile in one ledger
Polar charges settle into a single revenue view alongside the App Store and Google Play, one source of truth for MRR and churn.
Related apps
Settle Polar into one revenue ledger.
Start free, integrated by your coding agent in under an hour. Your revenue data is yours: export anytime, never sold.