Help Remembering Options Website

Hi all, About 10 years ago I was getting my MS in finance and got really into options and derivatives. There was a website we used to use to look at profit/loss charts of the various different options trades. It was all encompassing and I remember there being about 15 or so different charts, maybe even more. They ranged from long call to condors, butterflies, etc. I’m studying for my Series 7 now and have gotten to the options section that discusses spread trades and I don’t necessarily love the explanation I am getting from the coursework I have. I was wondering if anyone could help me out in remembering the site I have in mind. I don’t believe it was options alpha and after googling “option profit loss charts” none of the sites that are coming up appear to be the one I remember. It is totally possible the site no longer exists, is a paid service now due to the increase in people wanting to trade options, or anything in between. If it helps at all, I distinctly remember the website being a grey background with blue/dark blue text haha Thanks and hopefully I didn’t break any rules in posting this.