Caustic is a cross-platform DAW
that provides you with a virtual rack of multiple synth and effect units:
![one of the synth modules](/media/apps/caustic/CQVIQhI1dOHHTgOp-ZeE8D0ptgk=/caustic1.jpg)
![an active rack configuration](/media/apps/caustic/CqltQtV9RoMxzRwvfY__3-WBwr4=/caustic2.jpg)
It is a 32-bit app and doesn’t work on Big Sur, but I have some hope it will be updated sometime (or that I’ll still be able to run the iOS version on my desktop in the future).