The US tech giant acknowledged last week that it was behind the Colorful Balloons application, which is similar to its Moments app but omits any mention of Facebook's brand name.
Facebook has strived to breach the "Great Firewall" -- which tightly controls China's internet content -- ever since its flagship social media platform was banned by Beijing in 2009.
Facebook chief executive and co-founder Mark Zuckerberg has made high-profile visits to China and met with political leaders. He is even studying Mandarin.
But analysts voiced doubts that Facebook will fully enter the Chinese market any time soon, and the app has had a humble beginning since it emerged in May.
More From This Section
According to San Francisco firm App Annie, Colorful Balloons ranked 46th in the photo and video category for iPhone apps in China and a lowly 758th among all apps.
"Facebook threw a curve ball in getting inside the China market. It may not be effective, but it is certainly a nice try," said Zhang Yi, head of mobile-internet consultancy iiMedia Research Group.
The app has icons and features similar to Facebook's Moments application. Chinese users must register with a local mobile number and the app will sort through the images stored on their phones based on dates.
The app is not linked to Facebook accounts, so users can't post pictures to their Facebook pages or view content from Facebook through the app.
"If the app can't cross the Firewall and (can) only be used in China, what's the use of it," one person commented on China's Twitter-like Weibo social media network.
A company named Youge Linking Internet Technology was registered in Beijing in March, with a capital of one million yuan (USD 150,000), according to the National Enterprise Credit Information Publicity System.
While the app is not mentioned in the system it says the firm's business covers internet information service and software development.
Shortly after the company was registered, Facebook's China representative Wang-Li Moser had a meeting with Shanghai's commerce commission director Shang Yuying in May to talk about setting up a Facebook subsidiary in the city, according to the commission's website.