The Firebase iOS framework for adding realtime data synchronization to your app.

Create a more engaging experience and connect with more users by integrating social into your iOS app. Extend your app in new and creative ways using these Google+ platform features.

A collection of source from different Google projects that may be of use to developers working other iOS or OS X projects.

Google Toolbox for Mac - HTTP Fetcher

Share health and fitness data with other apps, while maintaining the user’s privacy and control over their data. HealthKit stores data from apps on iPhone and Apple watch. It also works directly with some health and fitness devices. In iOS 8.0, the system can automatically save data from compatible Bluetooth LE heart rate monitors. The system can also automatically import activity data from the M7 motion coprocessor, if available. Other devices and data sources must have a companion app that can access the data and save it to HealthKit for them. HealthKit is designed to manage data from a wide range of sources, automatically merging the data from different sources based on user’s preferences. Apps can also access the raw data for each source, merging the data themselves. HealthKit provides an app to help manage the user’s health data. The Health app acts as the user’s interface to the HealthKit data. Users can view, add, delete, and otherwise manage all of their health and fitness data using this app. They can also edit the sharing permissions for each data type.

Create, distribute, and update passes for the Wallet app. Request and process Apple Pay payments in your app. The PassKit framework lets you add and manage passes in the user’s Wallet app. The Wallet app allows users to organize their boarding passes, tickets, gift cards, and loyalty cards. Using the PassKit framework, you can add passes to Wallet and have these passes appear on the user’s lock screen based on the time and place when the pass is relevant. You can also update a pass’s content using push notifications. Additionally, Wallet manages the user’s credit cards for Apple Pay. The PassKit framework also supports in-app payments for physical goods and services using Apple Pay. For digital goods and services delivered within the app, see In-App Purchase Programming Guide instead.

Protocol Buffers (a.k.a., protobuf) are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data.

C bindings for Google's Protocol Buffers

The Watch Connectivity framework (WatchConnectivity.framework) provides a two-way communications conduit between an iOS app and a WatchKit extension on a paired Apple Watch. Apps use this framework to pass files and data back and forth. Most transfers happen in the background when the receiving app is inactive. When the app wakes up, it is notified of any data that arrived while it was inactive. Live communication is also possible when both apps are active.