It sounds like you're looking for a similar to Waves Tune Real-Time .
Open-source and affordable alternatives: waves tune realtime free upd download
: Upgrading to a brand-new major version (e.g., from V14 to V15) typically requires an active Waves Update Plan (WUP). It sounds like you're looking for a similar
Support for over 43 scales and custom MIDI input for precise pitch mapping. Getting Started for New Users waves tune realtime free upd download