The deal announced Monday gives Google a popular service that competes against Facebook’s Instagram, whose tools are widely used to display, touch up and share photos taken on smartphones and tablet computers.
Facebook bought Instagram for $715 million in a deal that closed last month.
Although it has grown rapidly since its debut nearly 15 months ago, Google Plus is still experimenting with different features aimed at getting Web surfers to check into the service more frequently.
Google Plus now has about 400 million accountholders, according to a post Monday by Vic Gundotra, a Google executive who oversees the service. About 100 million users come to Google Plus each month, Gundotra said. Facebook boasts 955 million active users.
Nik Software says more than 9 million people use Snapseed’s application for the iPhone and iPad.
Apple Inc., the maker of iPhone and iPad, named Snapseed as its “application of the year” in 2011.