Facebook (News - Alert) Home is still being touted by the social media company – but some more improvements could be on the way. The homescreen-replacement app was first offered last April, and has been installed less than 5 million times, which is disappointing considering the size of the company.

Now, coming up on a year, Jocelyn Goldfein, Facebook’s engineering director, told VentureBeat, “We’re still very bullish on Home. We’re not done with Home.”

That means the company will likely continue to work on it to make it “really valuable” – before a marketing push, she adds.

“We’re patient; we’re prepared to give it time,” she continued. “We’re believers in Home; we believe it’s going to be valuable for users. But it’s on us to cause that to happen.”

Home has already seen some improvements. As of now, Home brings content to the front of a phone, according to Facebook. It works with Facebook for Android (News - Alert), Facebook Messenger and other services. A cover feed will show photos and posts from a Facebook news feed and from Flickr, Instagram, Pinterest or Tumblr. It also lets users go to favorite apps from a phone's Home screen.

“I think it takes time, when you’re building something genuinely new and disruptive…it takes time to get it right,” Goldfein told VentureBeat. “I think we did a really good job with the polish, which is part of why I think [Home] got such almost fawning coverage at the outset. But I don’t think we made it valuable to users from the outset.”

Considering the huge number of people who use Facebook, less than 0.5 percent of the social media giant’s mobile users ever installed Home, according to a report from The Guardian. Facebook has 945 million monthly active mobile users, and an active userbase of 1.23 billion, according to recent data.

Remember, too, that Facebook wants to continue to innovate and places a high priority on mobile options, especially with tablets, given the current marketplace. Moving ahead may mean some trial and error, before success.

“What Facebook is trying to do on mobile is of a size and scale that’s pretty unprecedented; there’s no real textbook,” Goldfein added in the interview with VentureBeat. “I think it’s pretty well documented that we were not very good at mobile — terrible, in fact. … We had to learn, [and we were] definitely under the microscope.”

She recalled that in 2010 Facebook’s mobile team was “like four guys in the basement… And I won’t even talk about how we were approaching Android because it was just embarrassing. Everything has changed.”