Data Jar 1.1.4 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. This free Mac app was originally produced by Simon B. Støvring. The application lies within System Tools, more precisely System Optimization. We recommend checking the downloaded files with any free antivirus.
From the developer:
Data Jar is a data store designed to be used with Shortcuts. The data store lets you persist key-value pairs. The tool offers extensive support for Shortcuts, enabling you to read and update data directly from Shortcuts. You can store text, numbers, Booleans, lists, dictionaries and even files. The files are stored in iCloud Drive.
You may want to check out more Mac applications, such as Free Data Recovery, Card Data Recovery for Mac or Telepath Data PST Parser, which might be related to Data Jar.