All updates to the version you purchased are free. So if you purchase version 1.0 all 1.x releases are free upgrades. These releases generally include bug fixes and minor additional functionality. We reserve the right to charge a nominal upgrade fee for major version upgrades such as going from 1.0 to 2.0, as such major releases generally indicate major functionality changes and/or significant behind the scenes work to improve the software.
No. ENIndexer is a downloadable application that runs on Windows and Mac platforms. No Internet access is required to use it. You will need an internet connection when you register your software, but you can register from any computer if you don't have a connection from the machine you are running ENIndexer on.