App on MAS that writes mathematical formulae into an image?

I remember an app that was featured on the Mac App Store a while ago that allows you to write mathematical formulae into an image.

I can't find it now though. Does anyone know what it is?

Solution 1:

Check out "Brisk", MAS link and screenshots etc here: http://www.chocomoko.com/brisk, Youtube screencast demo here: http://www.youtube.com/watch?v=qVeJ4_DErX0

Solution 2:

It isn't in the Mac App Store, but try LaTeXiT.

As you might have guessed, it uses Latex input to create an image of the equation. You can link the image into a Keynote or Pages document (or others, I'd imagine). Live updating, etc.

I use it frequently, and love it!