Download of SunsetsFree 3.0.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Design & Photo Tools, more precisely Viewers & Editors. The actual developer of this free software for Mac is Digital Thought Software. We recommend checking the downloaded files with any free antivirus.
From the developer:
Sunsets: For telling someone what you feel when words
aren't enough...
Take one of your images and mix with a sunset, add a message from the heart, and send it to someone you love.
You may want to check out more software for Mac, such as Smith Chart for Mac, Keynote Action Pack or Piranesi, which might be similar to SunsetsFree.