# Flutter SDK
Chargebee's Flutter SDK supports processing In-app purchase subscriptions.
# Sync In-App Subscriptions
TIP
For SDK methods to work, ensure that prerequisites(Apple (opens new window) and Google (opens new window)) are configured in Chargebee.
Sync In-app Subscriptions to Chargebee by integrating your app listed on Apple App Store (opens new window) or Google Play Store (opens new window). This integration with Chargebee will help to process In-app purchase subscriptions and track them on your Chargebee account and create a single source of truth for subscriptions across the Web, Apple App Store, and Google Play Store. You can use Chargebee's Flutter SDKs (opens new window) to process and import In-app subscriptions from the Apple App Store and Google Play Store on your Chargebee account. Use this if you are selling digital goods or services or are required to use Apple's and Google's In-app purchases as per their app review guidelines(Apple (opens new window) and Google (opens new window)).
