The 1.13 version of Newstify for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software is included in Internet & Network Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free Mac application is rkApps.
From the developer:
Newstify is an application that provides you with the news you are interested in. All you need to do is select from a list the news sources you wish to follow. From that point, the news will come to you as notifications. If you find the notification interesting, you can click on it and the full article will show up. Newstify is crowd-sourced. It means that feeds added by others are visible to you and vice versa.
You may want to check out more software for Mac, such as NewsTicker, Cream or Mixtab Pro, which might be related to Newstify.