https://techcrunch.com/2021/10/20/twitter-acquires-group-chat-app-sphere/

Twitter has acquired London-based Sphere, which operates an eponymous chat app for groups, the latest in a series of recent moves from the social network as it looks to aggressively broaden and improve its product offerings.

Sphere — founded by Nick D’Aloisio, who previously founded news summary app Summly, which he famously sold to Yahoo at the age of 17 for a reported $30 million — did not disclose the financial details of the deal. The startup had reportedly raised at least $30 million — including $11.8 million in the first two rounds that TechCrunch first reported.