Betternet

Betternet is an application that lets you access any webpage in the world without any type of restrictions, avoiding any kind of censorship that might be present in your country. You can also access different services that would normally be restricted within your country borders.

As the name says, Betternet is completely free, and it doesn't have any kinds of ads. The only thing you have to do to use it is press on the connect button, and a couple of seconds later you can connect to the Betternet VPN network.

Betternet is a powerful VPN client; it's also lightweight and easy to use. It doesn't let you choose the country to use as a mask, but in exchange you can have a really user-friendly experience.