That's the problem: You have to go to the homepage of the app and there isn't a link on the official apps blog page.
Here's the process I went through:
* Click HN link
* Okay, so what does this do? Click on Cheddar for Mac
* Great, known issues and a download link, but _what_ am I downloading? click "our blog" to go to blog front page
* Scroll through the most of the front page. I see open sourcing news, shirts and other stuff, but not what it does.
* Okay, I see a GitHub link. Let's go there.
* Top of the GitHub page has "Cheddar for iOS — Read more" still not helpful enough. Fine, I'll read more.
* Finally at the end of the first line: "a simple & instant task manager."