Stage Research provides software on a subscription basis. That is, when you purchase any software program from Stage Research, all updates for one full year after purchase are available to you at no additional cost. If we release a new version, whether a major version or minor version, you may download and install at no additional charge within your subscription period. At the anniversary of purchase you may either purchase another year of updates, or choose to stay with what you have. A program with an expired software subscription will continue to run, however additional updates will not be available. If you have an expired software subscription and wish to gain access to current releases, simply renew your subscription using your assigned serial number.