Yeah - you are right. But I like it that I can see how many days are left - even if it's not 100% correct and I get stuck at "5 minutes before 12" because then I see that it can appear every time.
Maybe I'll add an option for another representation... something like the commit graph in github (don't know the name...) That would be nice too.
To compare the cycle length there is an extra statistic section. I want to add a graph there to make the fluctuations more clear.
Do you mean the contributions-in-the-last-year block at the bottom of your user profile? I can see that being a good alternative to the monthly clockface, because it's broken out by weeks and not months. Color intensity might be useful when you get around to tracking things like mood.
To compare the cycle length there is an extra statistic section. I want to add a graph there to make the fluctuations more clear.