Google Plus is a service to share links, photos and other content. The Google Plus API allows developers to access publicly-available Google Plus content, including user information and publicly shared items.
The following is a list of SDKs from our SDK directory that matched your search term. Though your definition of an SDK may differ, in our world, we define SDKs as platform- specific tools for consuming existing APIs of the sort we list in our API directory. For example, the Ruby SDK for consuming the Twitter Ads API. If you think an SDK, API, or other asset is missing from our directory, be sure to check our guidelines for making contributions to ProgrammableWeb.
Google+ is an account service that allows interaction with other users through posts and pictures. This is the official link to upgrade the Google Plus SDK for iOS. Resources include download, access frameworks, upgrade, and build. Additional tools explain how to integrate Google+ into iOS, how to share to Google+ from iOS, and how to share interactive posts from the iOS app.