Purchases

https://pub.dev/packages/purchases

This is a drop-in replacement of purchases_flutter that allows getting purchase information on every platform.. You only need to import this package in your pubspec.yaml.

Purchases.apiKey = 'Add your api key';
Purchases.userId = 'Add the user id';

Purchases.purchasesInfo.addListener((info) {
    // For platforms that support the revenue cat native sdk(android, ios and macos),
    // this information will be updated whenever there is new changes.
    // For platform not supported by the official plugin this information will only be retrieved once, 
    // after the user id has been set
});

To use the native sdk endpoints you can check

if(Purchases.sdkSupported) {
    ///...
}