alt Hacker Newsthanks! it can actually test apps running on your localhost with our tunneling feature (https://docs.smooth.sh/features/use-my-ip)
you should be able to tell it to go to your localhost address and it should be able to navigate to your local app from the remote browser
let us know if you have any questions!
It still may not be quite ideal. For example, right now I was building a clone of Counter Strike. There's such large files that tunneling would be cumbersome.