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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?

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how do you want to write the formula? with keyboard (latex format) or with a mouse/trackpad? – Enrico Susatyo Sep 28 '11 at 12:05
Mouse/trackpad would be great. I've actually found out that it is Brisk, but is there an app that does this without using LaTex, with a mouse/trackpad? – JFW Sep 29 '11 at 18:55
You would be better placed accepting the answer and asking this as a new question, to help future searchers benefit from a more focused question & answer. – stuffe Sep 30 '11 at 9:38
up vote 3 down vote accepted

Check out "Brisk", MAS link and screenshots etc here:, Youtube screencast demo here:

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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!

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Note that you need to be familiar with LaTeX to use this app. That said, this is a spectacular application... it can export as png or pdf, many customizable options, keeps history of previous equations, and other stuff. I relied on this app for all of my presentations during my graduate (and postgraduate) career. – eykanal Sep 28 '11 at 14:23

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