Technically, Hotspot Shield creates a virtual private network (VPN) between your iPhone or computer and the internet channel. Thanks to it, you'll be able to be safe and protected against snoopers, hackers or ISPs or any any other suspicious activity against your privacy and security.
In addition, the program doesn't need to be reconfigured because it comes perfectly set to protect you. It doesn't feature dozens of buttons to get you in a mess, just useful options to offer a great service. You run it, and it will tell you are protected as soon as it does what it has to do. That's it.
Hotspot Shield can be really useful for those users who like to be protected when browsing the internet or to access websites without area restrictions.