review apps are super exciting! That's the exact kind of interface I've been hoping for. I really hope it's available like the commit status api is (we use that for posting our custom CI builds). We currently have our own review app system at our company (and no hopes of switching to gitlab ci in the future - unfortunately :( ), but it'd be amazing if we could tie into it the same way we do for CI -- just "here's the link, it built succesfully!" would be a huge improvement to our workflow. Currently we treat it as a separate build (posting to status, with the url being the review app). Then because the URL didn't seem very visible on gitlab, we post it in the merge request too. Not nearly as nice as this would be!