For now, yes. But, since the app is based on a standard spec, other browser will hopefully support Web Audio Worklets soon.
> — Please note that the app runs only on Chrome > v66, for
> now, because Chrome is the only browser implementing the
> Audio Worklet[1] spec. Other browser will follow suit
> (hopefully) soon
[1] https://developers.google.com/web/updates/2017/12/audio-work...