ready
1flutter pub add purchases_flutter
2Purchases.configure(apiKey)
3runApp()
SDK live
subscriptions.dartdart
// Subscriptions, end to end.
//
// Set up the SDK once. Fetch the offering
// your paywall renders. Run a purchase.
// Check the entitlement. Restore on
// reinstall.
//
// Five SDK calls and you're shipping
// recurring revenue.