The interface is deceptively simple, but you don't need many parameters for complex sounds with phase distortion synthesis. Still, Digits is more about its core sound quality than it is about total functionality. While additional modulation options and envelope complexity like that of Kassiopeia would be welcome, I find myself coming back to Digits because of its crisp/punchy character triumphs gross versatility.
In terms of sound quality alone, I'm yet to find a better phase distortion synthesizer.
Ver. 2.1 x32 under win7 / dotnet 4.6.2 / Vc runtime 2015 + 2013 gives always an Error "Der Prozedureinsprungpunkt "ucrtbase.terminate" wurde in der DLL "api-ms-win-crt-runtime-l1-1-0.dll" nicht gefunden." and then the host says it's not a valid .vst plugin. Same with Matt Tytels Helm. But digits Ver. 1.3 works.
I did with vcr 2013 and 2015, of course x86, to no success. What helped NOW, after I read your post and installed the 2015 again to no success, was the ADDITIONAL installation of "Microsoft Visual C++ 2015 Redistributable Update 3 RC".I only noticed the existence of this pack because it was second in the google search. Now Helm works, too, and I am happy. But for a normal user this is surely too complicated.