Code App is a similar app available on iOS. I've used it a bit, and it's pretty polished. It's a paid app in the app store but the testflight build is available for free.
I think they only look similar but are completely different. OP's app runs a full-featured vscode (not creating a new editor) and supposedly has access to all vscode's marketplace extensions.
You can actually edit remote files via SSH in the TestFlight build, and get a remote terminal to boot. Quite handy, although I can’t seem to be able to display two files side by side inside the app.