The big issue there is that it would require running 30 searches. I'm not opposed, in principle, to offering a calendar view based on your search. But having just received my AWS bill for September (this tool cost me $81.56), I'm a little concerned that "30 days" would become the default for everyone.

I'm also toying with eliminating the free tier and charging something like $0.0001 per credit. Not enough to actually affect anyone, other than the annoyance of having to spend a few cents every now and then. But enough to completely cover my costs.

Then I wouldn't care what you search