Individual license purchases are a one-time licensing fee. You are sold a license for the current version of the software and can use that version as long as you want to without having to pay any maintenance or renewal fees. When the next version of the software is released you can pay a license upgrade fee to upgrade to the latest version, but are not required to.
Our subscription license options last for one year and are renewed annually.
If you choose to have us host your survey, there are additional fielding charges, though you are welcome to self-host or use a third party hosting solution.