Easy Subtitles Synchronizer is a free software. You can use it on any computer, and you don't need to pay for it or to subscribe yourself anywhere.
ESS is intended for users who possess legitimate subtitle files and / or those who wish to create subtitle files for digital media that is owned legally and only for private use. In any case, the authors of the ESS are not responsible for any unlawful use of this tool. ESS is not responsible for subtitles that have been downloaded from internet through any channel.
The latest version of Easy Subtitles Synchronizer is 1.0 since 2011-01-19. You can download it from here