Vital (wavetable synth) goes free (GPLv3)

I think this is a very interesting case study of a solo developer making money in free software.

on the official website https://vital.audio/ there are several premium tiers. These premium tiers are (as far as I understand) still compatible with 'free software' ideas (additional sound presets, skins, etc.).

This synth is already popular around the whole music community. Functionality easily rivals other synth software sold for $200+.