They actually have multiple parts of the website I did not know were there. The Open Reading Periods page is split into two sections. One with open dates, and another for year round open markets. They do have a submission tracker, though I have never used it. I do find that their market list is more likely to include fiction, poetry, and drabble markets. Their market pages include important information such as links to guidelines, reading period, fees, and response tim

You can track you stories as well as income received from them. Even mark the stories as retired. There is no easy way to sort markets in personalized folders (One Chill Subs advantage), or see which markets were newly followed. I really like the notes option, and copy parts of the Scrivener market notes to them so I can see them at a glance when searching for a market for a story. There is a tiny notepad that can be hovered over to see notes at a glance.

Chill Subs is fascinating. They allow you to have a nice author profile, list multiple publications, and search for markets. They have recently added a search by newly added markets option. Which is something I had thought about requesting.