Photo-sharing application Memoir, a Timehop competitor that allows you to rediscover old photo “memories,” has raised an additional $5.5 million in a round led by Redpoint Ventures’ Ryan Sarver. Others participating included prior investors Founder Collective, Box Group, Lerer Ventures and Thrive Capital. The company had previously raised $1.2 million in seed funding.

Formerly the head of platform at Twitter, the new round is Sarver’s first as a VC, and is representative of investors’ increasing interest in funding more private social networks.

Memoir, for background, first launched on iOS in fall 2013, offering users a variety of ways to uncover their old photos, including a time capsule-like function that’s a lot like Timehop’s. But Memoir tacks on several other features, too, including the ability to ask friends for photos you and they both snapped while at the same place at the same time.
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