The Chargebee Subscription .NET Sample Code by Chargebee demonstrates how to create a new subscription. Developers can access by using API Key to authenticate and perform callbacks to receive responses in return.
RevenueCat is live with its SDK approach to in-app subscriptions across platforms. After a half-year beta, RevenueCat has launched v1.0 of its SDKs and API. The goal of the company is to handle all things in-app subscriptions so app developers don't need to rely on app store subscription APIs.
There are a wide range of music services on the internet that developers could tap into to create music applications, and there are hundreds of APIs available for developers to use for those applications. Here we highlight the most popular music APIs that are listed on ProgrammableWeb.