The 1.6 version of StarTools for Mac was available to download on the developer's website when we last checked. We cannot confirm if there is a free download of this app available.
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. The actual developer of this software for Mac is SiliconFields. The program relates to Design & Photo Tools.
From the developer:
StarTools comprises a multi-platform processing engine, built from scratch. Building something from scratch allowed us to create a new architecture that capitalize on the enormous amounts of computing power RAM and storage space most modern computing platforms are equipped with.
You may want to check out more software for Mac, such as Cuadro, which might be similar to StarTools.