[isametry]

You're not wrong, the frontpage screenshots don't entirely do it justice. That title bar you mention is one of the most custom-looking components for sure, especially in the "Neon" theme.

But it gets better when clicking around the app – all the different settings, modal sheets and sidebars feel very much like home.

The filetree icons are… a choice, yes. They kind of lean more into the "smooth skeumorphic squircle" look which is normally applied to apps, NOT files and folders. I'm guessing they didn't want to and/or weren't allowed to use the plain icons that Xcode does.