Excellent piece and great advice!

I'd add Feeld to your list. The app was started in London in 2015, but it's more and more used all over the world and in the US—it's the perfect app for hook ups, moresomes and FWB :)

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store