The Find My Friends and Find My iPhone apps were combined with iOS 13.
The Find My app can help you locate your iPhone, iPad, Apple Watch, Mac computer—even AirPods—if lost or stolen. Find My can erase the data on your iPad or iPhone if your device is lost or stolen and someone repeatedly attempts to enter an incorrect passcode.
You can also share your location with friends and view the location of friends that have shared their location with you.
If you have a missing device, sign in to iCloud on the web and go to Find My iPhone. If a friend or family member also has an iPhone or iPad (and will let you use it), have them open the Find My app, tap the Me tab, then tap Help a Friend. This will open the Find My iPhone webpage in the Safari web browser. You can sign in to your Apple ID on their device. A map will show you the location, if available. You can also:
Open the Find My app. If it is your first time, you may get a box asking permission to Turn On Send Last Location. If you turn this on, you can see the last recorded location of your device if it is lost or stolen. It’s a good idea to turn this on.
At the bottom of the screen are three tabs, People, Devices, and Me.