AEGYRE the Touch for iPad app works fine with my Virus. In my rig, the app connects through a USB-C hub to an iConnectivity MioXM MIDI hub, which I’ve connected the Virus TI2 via a Mio DIN to USB adapter.
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To be sure I’m giving you an accurate answer, just now I tested plugging the iPad directly to the Virus TI2 USB port with my Anker PowerExpand 6-in-1 USB C PD Hub (available currently on Amazon for $35). It worked fine. I’ve also used my ADG 9-in-1 100W GaN Charger USB-C Docking Station with no problems.
Each of these devices mimics the Apple “Camera Connection Kit” or Apple USB-C Digital AV Multiport Adapter, acting as a USB C hub and providing USB-C PD charging capabilities. The combination of functionality is quite helpful, as you can power/charge the iPad while using it to control the Virus.
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Further, if you want to “play with fire” as I do, a hub like one of these can connect to an audio interface at the same time it’s interfacing with a MIDI synth like the Virus, or even a MIDI network like the one I use. I’ve got a Behringer XR18 mixer recording to Apple Logic Pro for iPad, simultaneous with lots of MIDI communication. The iPad is quite a powerful musical tool!
I use the MioXM because I have an elaborate MIDI setup with a bunch of other keyboards, tone generators and controllers. The MioXM, while really helpful if you want to connect a lot of MIDI gear, doesn’t directly connect to the Virus via USB, as the Virus is not fully MIDI Class Compliant. The Mio solves that problem for me, connecting via DIN MIDI.
I hope this helps!
Welcome to the fellowship of Virus synth lovers.