“Do Not Disturb” mode lets smartphone users silence notifications — and signals that they may take a while to respond.

Before Alan Harbron even knew Kate Tsyrlin, she had set her sights — and Hinge settings — on him.

The popularity of true-crime content has led some women to create binders containing personal information, a list of exes and even DNA.

A woman, whose symptoms have made her infamous for the “Irish exit,” struggles to cope with the physical and emotional toll of trying to make...