Yes, OMNYSS is an expansion pack for BIAS FX 2 desktop and mobile.
For desktop users, if you don’t own any version of BIAS FX 2 Desktop, OMNYSS comes with a free copy of BIAS FX 2 LE. If you already own BIAS FX 2 Desktop license (Standard, Pro, or Elite), you can purchase OMNYSS as an expansion pack to add on top of your existing license.
For mobile users, the BIAS FX 2 Mobile app can be downloaded on your iOS device for free, you can then find the expansion pack in the in-app store.