X2Go is not available for iPad but there are a few alternatives with similar functionality. The best iPad alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try Chrome Remote Desktop or NoMachine. If that doesn't suit you, our users have ranked more than 25 alternatives to X2Go and four of them are available for iPad so hopefully you can find a suitable replacement.
RemoteView is a service that lets you remotely access your computers and mobile devices through your internet connection, regardless of time and place. All you need to do is install the agent on your remote computers, Android devices, and servers.