I helped a friend set up a roku. During the process I added that device to my app. How can I delete thus device from my app? It shows up as inactive and I would prefer to have it gone.
First, verify when you set it up, you didn't add it to your Roku account by mistake. Just take a minute, log in, and check. If it is, then you won't get rid of it as long as that's the case.
Assuming the expected result -- that is, the friend's device is not on your account -- then you'll have to delete the Roku app from your iOS device, then add it back from the App Store.
Once you do that, you should see your devices that are on your network.