Downloading ListMo 2.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Productivity Tools, more precisely Timekeeping. 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. This free software for Mac OS X was originally developed by Jens Hilddebrand.
From the developer:
ListMo lets you manage your tasks in a simple and collaborative way. You can share lists with others via iCloud, while Siri and Shortcuts help you to be more productive. It supports the latest iOS and watchOS features, including Siri Shortcuts, Drag and Drop on iPad, reminders on the Siri Watch Face and the new complications on Apple Watch 4. It is also available on macOS.
You may want to check out more software for Mac, such as Quote of the Day, Opera Clock or Dual Calendar System, which might be related to ListMo.