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.
From the developer:
4LightStarter is an interpreted structure for use with 4D Developer from 4D.com. It uses 4LightData Base as a component giving access to most of the features of 4LightData Base while allowing creation of custom methods and forms. 4LightStarter can be used as the starting point for new databases and also opens existing 4LightData Base files. Use 4LightStarter to add Forms to existing 4LightData Base Tables.