PaywallOS: A Framework for Application Monetization

Instead of scattering subscription checks throughout an application, I’ve been building PaywallOS, a framework that centralizes application monetization.
Features include:
Subscription management
Pricing tiers
Feature gating
Billing portal
Stripe integration
Usage analytics
One feature I’m particularly proud of is the interactive Sandbox available directly from the landing page.
It lets developers experiment with products, pricing, subscriptions, and feature access before integrating PaywallOS into their own applications.
Website:
https://paywallos.openverb.org
I’m especially interested in feedback from SaaS developers.