It did not appear to have a feature to “swipe” left or right on potential matches to signal interest, as Tinder and other established services have.
But there were two buttons for “pass” and “interested.” The optional feature will be for finding long-term relationships, “not just hook-ups,” Zuckerberg said.
A dating service could increase the time people spend on Facebook and be a “big problem” for competitors such as Match Group Inc, said James Cordwell, an analyst at Atlantic Equities.
Zuckerberg also said on Tuesday that Facebook was building a “clear history” privacy control to delete browsing history, similar to the option of clearing cookies in a browser.
Facebook CEO Mark Zuckerberg speaks during the annual F8 summit at the San Jose Mc Enery Convention Center in San Jose, California on May 1, 2018.
Facebook has muddled through its first year as a public company after a disastrous share offering, and still faces questions on whether it can grow into an Internet superstar, analysts say.
The world's biggest social network, which now has more than 1.1 billion users worldwide, has managed to boost its earnings since the IPO, including from its mobile platform, important in countering its critics.
A prototype displayed on screens at the F8 conference showed a heart shape at the top-right corner of the Facebook app.