Seriously though we got drug out for like 4 years on an iPad version that never saw light of day. Christian even talked about showing a video when he posted about shutting Apollo down. And of course the video has never been released.
He probably wanted to do something too ambitious and feature-rich, and then could never finish it (sunk cost fallacy and all that); although many users would’ve already appreciated something simpler too, like the screenshot.
He wanted to do quite a bit more than a simple (semi-automatic) layout with a sidebar and main content. While this may look great at first glance, how useful it it really? There's a lot more to UX.