SubShift 2.0.2 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. The application lies within Audio & Video Tools, more precisely Editors & Converters. The actual developer of this free software for Mac is Jonathan Clark.
From the developer:
SubShift is designed to make perfect subtitles. You can synchronize, edit, and export subtitles fast and easily. You can use the search functionality to find corresponding lines and scenes in one click. However, SubShift only works with MP4 video files and SRT subtitle files.
You may want to check out more Mac applications, such as SubShifter, which might be related to SubShift.