AnOtterRSS 1.3.0 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. The actual developer of this free software for Mac is Josh Holtz. AnOtterRSS for Mac belongs to Internet & Network Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
An Otter RSS Reader is minimalistic RSS reader for iOS and macOS. The application has the ability to sync feeds and articles over iCloud. The tool allows you to organize your feeds into folders. The articles are listed and marked as read and unread. The articles are displayed in a native web view with optional reader mode.
You may want to check out more Mac applications, such as Pineapple News, Rss Growler or Pressjack Free Edition, which might be related to AnOtterRSS.