It's free and available for both Windows and Mac and you can download it at http://subtitlesapp.com (disclaimer: I'm the developer).
Lately I've been using Subtitles a bit less because I got a VIP subscription on OpenSubtitles, so when I download from the site I skip ads. Would be incredible to download the subtitles as VIP on Subtitles though.
Post it as Show HN: !