ArrFlow is subscription and entitlement infrastructure that works with whichever payment processor you already use, so your billing logic never has to be rebuilt around a single provider.
Stripe and PayPal today, with more on the way. Run one or both without rebuilding your billing logic.
Feature-level entitlements tell you exactly what a customer can use, updated the moment it changes.
Tiers, add-ons, usage-based limits, and quantity billing, all handled by one model.
A full sandbox mirrors production, so you can build against real billing flows without touching a live card.
Webhooks and events keep your app in sync the moment a subscription or payment changes.
Official libraries for Node and Java, built directly from the same API you'd call yourself.