Using Open Stage Control with a redundant rig setup

Hi! I'm building out a redundant computer setup for my live rig, and would like to use Open Stage Control for an iPad touch screen device that would control an Ableton setup. As far as I'm aware of though, Open Stage Control would need to be running on one of the computers to serve up the page via a network to the iPad, defeating the usefulness of a redundant rig. The only way I can think of getting around this is by using something like a raspberry pi running node as the dedicated OSC server, as I don't believe there's any way to run the Open Stage Control server directly on an iPad (am I wrong?).

I'd love your feedback!

Thank you once again!

True, the server can't run on an iPad.