One software license is required per user, per year. To continue to use the software you need to renew your license each year.

The Annual Subscription License grants one user the right to install and use ExcelBooster on a single computer for a period of one year.
The license includes access to all updates (minor and major) released during the subscription term.
The Premium Support Subscription provides dedicated email technical support from a senior support engineer and VBA modeler for one year, including remote meetings as reasonably required.