Downloading FluxBuilder 1.5.1 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 application lies within Developer Tools, more precisely Webmaster Tools. We recommend checking the downloaded files with any free antivirus. This free Mac application is an intellectual property of InspireUI.
From the developer:
FluxBuilder is a drag-and-drop tool which guides non-tech users in building their own mobile apps in just 3 simple steps: Integrate, Design and Publish. With this application, you have the chance to explore a new way to build your app without knowing to code.
You may want to check out more software for Mac, such as Boks, Navicat for Oracle or GoodPage, which might be related to FluxBuilder.