The In-App Purchasing (IAP) API makes it easy for you to offer digital content and subscriptions for purchase within your app, such as in-game currency, expansion packs, upgrades, magazine issues, consumables, and more. You can quickly be up and running, ready to give millions of Amazon customers the ability to purchase engaging digital content using Amazon 1-Click settings

Apptentive’s mobile customer engagement software helps companies listen to, engage with, and retain their customers. Our product gives brands the opportunity to identify who to talk to, intelligently engage user segments, and mobilize customers to take action through in-app messages, surveys, and ratings prompts. Integrated into thousands of mobile apps, Apptentive helps companies engage mobile customers, boost app ratings, drive downloads, and earn customer loyalty.

Sell more Potions, Magic Hats, & Power Ups. Increase your in-app purchase revenue and make changes in real-time with Chartboost Store, our new backend service for mobile game developers.

The comScore Application Tag is designed to accurately capture and report on usage measurements for applications on connected and mobile devices. The Application Tag is available for popular platforms as a Software Development Kit ('SDK'). The SDK contains a software library that is written in the platform's native programming language as well as implementation instructions. For comScore Audience Analytics reporting the Application SDK provides Mobile Audience Measurement to report reach, launches and time spent in comScore Direct and syndicated ranking reports. For comScore Digital Business Analytics reporting the Application SDK provides a measurement solution that provides complete usage reporting throughout the application lifecycle. For applications on mobile devices that includes usage reporting even when the data connection on the device is not available.

DoubleClick is the ad technology foundation to create, transact, and manage digital advertising for the world's buyers, creators and sellers. Available for iOS and Android

Flurry Analytics provides an incredible amount of actionable intelligence into how and where people are using your app. You can quickly identify your most engaged and valuable users by grouping them on key characteristics such as demographics, location, language preference, and usage of select features in your app.

FMOD Studio is the professional audio content creation tool, for creating interactive sound and music for games and other types of applications FMOD Studio programmer’s API is the interface for programmers to load FMOD Studio projects and play them back in realtime. Also includes a low level API for simple sounds/channels/dsp/geometry.

The Google Analytics SDK for Android makes it easy for native Android developers to collect user engagement data from their applications. Developers can then use the Google Analytics reports to measure: The number of active users are using their applications. From where in the world the application is being used. Adoption and usage of specific features. Crashes and exceptions. In-app purchases and transactions. And many other useful metrics... The Google Analytics SDK also gives you the tools to monitor the success of mobile marketing campaigns. Connect user interactions with paid ads, Google Play downloads, and subsequent in-app usage and Ecommerce transactions. Google Analytics provides a powerful platform to measure and optimize all of your application marketing efforts.

Google Play services offers a standard authorization flow for all Google APIs and all components of Google Play services. In addition, you can leverage the authorization portion of the Google Play services SDK to gain authorization to services that are not yet supported in the Google Play services platform by using the access token to manually make API requests or using a client library provided by the service provider.

Google Cast is a technology that enables multi-screen experiences and lets a user send and control content like video from a small computing device like a phone, tablet, or laptop to a large display device like a television.

Google Cloud Messaging for Android (GCM) is a service that allows you to send data from your server to your users' Android-powered device, and also to receive messages from devices on the same connection. The GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device. GCM is completely free no matter how big your messaging needs are, and there are no quotas.