Search engine company Google has submitted its Google+ iPhone and iPad app to Apple’s App store for approval.

A Google employee Erica Joy wrote on her personal Google+ page that the app is awaiting approval for days now.

Joy wrote, "For my iPhone using friends: the Google+ iPhone app has been submitted to the App store (no not today, sometime prior to today) and is awaiting approval."

Apple has a strict vetting process for its App store and has rejected a few apps from Google in the past.

Meanwhile, Google+ rival Facebook’s CEO Mark Zuckerberg has become the most popular member of the social networking service by Google.

Zuckerberg has nearly 35,000 followers, while Google founder and CEO Larry Page has only 24,000 people following him.

However, neither Google nor Facebook has confirmed that the profile of Zuckerberg is authentic.

Google introduced its exclusive social network service called Google+ last week.

Google has a low market share in the social networking market, though it had launched services like Orkut, Wave and Buzz in the past.

Google has tried twice before to make a foray into the social networking category. It launched Google Buzz in February 2010 and Orkut social network in 2004. But Buzz had to be withdrawn after privacy complaints from users, while Orkut failed to attract users in the important UK and US markets.

Google+ is the most ambitious move into social networking since co-founder Larry Page took over as chief executive of Google in April.