I'll take it as a compliment, Heroku has a brilliant site and I hope ours can be as good but not appear to be anything close to a copy. It wasn't actually a reference during the design.
Do you have any suggestions on anything to change to make it less similar in your eyes?
Herkou is famous as being the first Rails PaaS to gain traction that was really "easy" to get started and push live.
This experience felt very similar - an impressive feit indeed, a similar feeling to what Herkou instilled the first time I saw their service.
The drag-and-drop web architecture super-easy-deployathon has that same slick awesome vibe (which is a good thing!), but coupling that with a similar layout, color scheme, and information architecture and its the first thing I jumped to.
Not a bad connection per se, but the original thought was "the guy that did the www site sweats herkou hard".
But seriously, thanks for this, I thought beyond the dark colour scheme and (very different shades of) purple there wasn't much more similarity. Next time I'm doing some redesigning I'll try and move it a bit further away.
Thanks for the compliments too.