Yik Yak, the anonymous app that creates a forum and message board for users within a five mile radius, returns to the US iOS app store, after its 2017 shutdown (Tim Marcin/Mashable)

 Tim Marcin / Mashable: Yik Yak, the anonymous app that creates a forum and message board for users within a five mile radius, returns to the US iOS app store, after its 2017 shutdown  — ...