What app gives you free Wi-Fi anywhere?

I'm curious, could you please elaborate on the existence of an app that supposedly offers free Wi-Fi access anywhere? It seems like a highly convenient feature, but I'm skeptical about its practicality and security implications. Are there any specific apps that you're referring to, and how do they work? Do they require any form of subscription or payment, or are there any potential risks associated with using such an app? I'd appreciate your insights on this matter.