Find my friends app

The Find My Friends app and the Find My iPhone app were combined in the release of iOS 13 in 2019. Both are now within an app called 'Find My'.

The Find My app has a grey background with a green circle and the blue location circle in the centre. It doesn't automatically take the place of the Find My Friends app on your home screen, which is why you might have been wondering where it got to. 

If you can't find the Find My app, swipe left to right from your home screen and use the search bar at the top of your screen. Or you can ask Siri to find open it for you.

Probably you mean the People Tab under the Find My app.

Does it show in Km?

Settings > General > Language & Region > Region [The units will display based on the Region selected here]