Hacker News Reader

While it's not an app, here's a really in depth article about best practices for typography that helped me out a lot:

http://www.smashingmagazine.com/2009/08/20/typographic-desig...

Are you looking for a snippet of CSS for the @font-face declaration like this http://kernest.com/fontconf-com.css ?

No, not really. What I had in mind was questions like:

what's your average length of headers? what's your average number of lines per paragraph? How many paragraphs do you have per page? How many columns do you have per page?

And then the app would offer me combinations of fonts, line spacing, etc for h1, h2 and p tags.

Snipppets like on here: http://www.3point7designs.com/blog/2008/06/10-examples-of-be...

I think you'll find http://www.typetester.org helpful

Ask HN: Web typography app