IIRC android has this too, it's just that it is seldomly used on both platforms ...

ATsch on March 16, 2016 | parent | context | favorite | on: The Difficulty of Private Contact Discovery

IIRC android has this too, it's just that it is seldomly used on both platforms because it is inconvinient (imagine having to select all contacts and search from them individually in e.g. WhatsApp) and means the app can not mine your data.