Downloading Filterstep 1.1.3 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 program relates to Audio & Video Tools. The actual developer of this free software for Mac is Audiomodern Ltd. We recommend checking the downloaded files with any free antivirus.
From the developer:
Filterstep is a modern motion filter plugin that provides a great deal of potential for all kinds of intricate rhythmic movements. It can give you incredibly complex and nuanced results based on various filter effect settings, and almost infinite possibilities for sonic exploration and movement randomization.
You may want to check out more Mac applications, such as CROSS-DJ, AmpliTube Metal or FretPet, which might be related to Filterstep.