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This is the piece we (Khan Academy) need to create a compelling math exercise experience on tablets. Playing around for a few minutes, this product seems to be way ahead of anything else out there.

If you're the creator, should I go through the contact us stuff on your website, or is there a better way of discussing possibilities with you?

(edited: @gpakosz contacted me on twitter)

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I saw another app like this (probably here on HN) a while back...it's an open-source Haskell project:

http://detexify.kirelabs.org/classify.html

EDIT: GitHub sources:

https://github.com/kirel/detexify

https://github.com/kirel/detexify-hs-backend

The version of Detexify for the iPhone is friggin' awesome.

I remember once upon a time it was faster for me to write out an equation than to typeset it. Then I met detexify and Mathematica. Both are brilliant, one is free :-)

Hey! I've been daydreaming of making this application for years now. It would be the killer application for tablets (for me, anyways).

I'm an Android developer, so if there's any way I can help out, or if there's any way I can make it happen faster, please let me know! (email in user profile. I'm really really hoping I can help out somehow.)

Cool. Just emailed you.

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