A complete redesign, Scaler 3 takes everything that made Scaler 2 the world’s favourite music theory plugin and builds on it in ways you’d never imagined. Scaler 3 will make it easier to take new directions, solve musical puzzles, and improve your works-in-progress in completely new ways.
![Quartet 1 v2.0.1 iPhone & iPad [iOS]](http://www.bixinyinyuan.com/wp-content/uploads/2025/04/11_副本-3.webp)
