That calculator is quite interesting. Much more in-depth than mine, as I'm just doing the math as if they were spheres. It could indeed use a few more intermediate log entries, but on the other hand, that's when even the exponential growth really picks up.
I do hope you keep working on your abandoned project, if only because I still want to see a proper cookie clicker-style BE game. After all, I'm the one who made this one, so playing it isn't nearly as effective for me :')