Re:Open source modular synth software lets you create 70s & ...
by dsego on Friday January 05, 2018 @04:22PM
(#16081768)
I think that is version 2 (square?). Here's a 2009 video of circle https://vimeo.com/6614780
The version history on KVR is interesting: https://www.kvraudio.com/product/circle-by-future-audio-work...
Helm's first release was August 3, 2015: https://github.com/mtytel/helm/releases
Circle's first release was also August 3, 2015. Maybe they're developed by the same person.