SingleText 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac application is an intellectual property of Worqbench. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program belongs to Productivity Tools.
From the developer:
SingleText is a small app that gives you a single text window for your note. This program works with iCloud. You should just sign in to your iCloud account when you set up your Mac. You may use it to share text between your devices, such as your grocery list, to do items, the URL to that funny site, the phone number of that restaurant for dinner, etc.
You may want to check out more software for Mac, such as 3dissue, Blurb Tally or Pads X, which might be similar to SingleText.