As a web proxy software, the essence of Hide My IP is to hide (by changing) your real IP, it has two major design intentions:
Access censored or blocked websites in your country
Protect your online privacy, so as to enjoy private/anonymous web surfing
Hotspot Shield (short for HSS) is a powerful, acclaimed free VPN (Virtual Private Network) agents automatic searching tool. It's mainly designed to effectively protect personal web surfing security and privacy; as well as breaking through the local network limits to access those blocked, censorship websites (like YouTube, Facebook, Twitter, or even Gmail) in some countries.
For home users, accessing any website has to pass through a local ISP's default DNS servers, which decide whether we can access some websites or not, as well as their access speed and security. Althrough we can change the DNS, problem is, the method used to manually modify is too complicated and troublesome for ordinary users, so we'd better use tools instead.