One risk of text apps not mentioned are the flurry of thugs trying to get in the front door. It's not the biggest issue back home yet (N.S.). but its a very large issue in the GTA and Vancouver, and even Ottawa. 2 girls murdered by knife in one apt in Vancouver last week, and one critical at an apt next door. While on the lighter side phone apps are used to gain access and commit home invasions with the intent to rob or abuse women multiple times daily. It's also a problem with kijiji and FB marketplace.
I don't see girls using a phone app myself, I understand why girls in a vulnerable position expect the same.