RevenueCat Flutter plugin

This is not an official RevenueCat repo. We use this plugin at PostMuse and decided to open source it. We welcome contributions of any kind. This implementation uses the native Android and iOS RevenueCat libraries.

How to use

  1. Go over to RevenueCat and create an account. Understand what Entitlements are and create the ones you need.

  2. Initialize the plugin

await RevenueCat.setup("YOUR_API_KEY_HERE", null);

If you have user accounts, the second parameter should be the user id. Leaving that null makes RevenueCat generate ids for you. Read more in the docs

  1. Know if the user is paying This bit is async. You need to listen for changes to the Purchaser Info and find a way to update the app UI to reflect locked/unlocked features.
RevenueCat.addPurchaseListener(purchaseListener);
RevenueCat.addPurchaserInfoUpdateListener(purchaserListener);
RevenueCat.addRestoreTransactionListener(purchaserListener);

We recommend you do this at the highest level in your app and find a way to propagate this info. We use an InheritedWidget to keep this state and listen for changes in another "blocker" widget that updates when the InheritedWidget changes state. The "blocker" widget blocks access to whatever is below it and shows a "PRO" badge on top. This is approach is simplistic but effective, and works for us.

Bottom line is you need to listen for state changes from RevenueCat. Listener structure is found here.

  1. Get the Entitlements
var entitlements = await RevenueCat.getEntitlements();

Response is a Map with Entitlements, which then contain Offerings, which contain Products. Products contain price, period, introductory price, etc. It's best to look at the models directly to understand more.

  1. Display Products, start payment flow
await RevenueCat.makePurchase(product.identifier);
  1. RevenueCat will take care of the rest and update your listeners from number 3

License

Published under MIT License. Read it here

Libraries

revenuecat

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]