If you decide to start using Hotspot Shield, you will have the option to use the Premium n for 7 days. During this time you can cancel the trial or proceed to subscribe to the 1 month, 6 months, 1 year or lifetime subscription.
If you decide to use just the free version of Hotspot Shield's, please note that this version provides US IP addresses which allow users to access blocked content in the US only. The content that's accessible with free version is limited. Hotspot Shield's Free edition is also supported by ads, If you want to have full access to US sites you will need to upgrade to Premium.