We're working on a new version of Math Ref that will include an equation editor, a favorites feature to save items for quick reference, a physics section and we'll be expanding just about every section to help you get more out of Math Ref. As we continue to develop this full version of Math Ref, in order to keep our demo version free, Math Ref Free, it will be ad supported. Math Ref Free contain just about all the great things that the full version will have, except without the equation editor, favorites, integration table, and a bit less content per section. We think this will let those that don't need the ability to make their own equations, or don't want to keep track of their favorite equations a good feel for what the full version has to offer.

Also, Math Ref has been spotted on these site and we'd love for you to check them and our revamped Cafepress store out.

http://thomas.infoxenter.com/app-store-database/new-apps

http://iphoneapplicationlist.com/2009/03/30/math-ref/

http://touchreviews.wordpress.com/2009/04/13/touch-reviews-iphone-app-promo-codes-math-ref-iphone-app-reviews/

http://www.freshapps.com/math-ref/

http://www.blippr.com/apps/337394-Math-Ref

http://www.programatium.com/macen/news.php?id=Math+Ref

http://www.apptism.com/apps/math-ref

http://digg.com/apple/Math_Ref_Promo_Codes

http://pocket.info/blogs/pocketnet/archive/2009/04/13/promo-codes-math-ref.aspx

http://en.wordpress.com/tag/math-ref/

http://www.ipodtouchfans.com/forums/archive/index.php/t-129657.html

http://friendfeed.com/e/24440512-c629-2fa0-c802-ee07c0de5d44/Promo-Codes-Math-Ref-is-the-2nd-most-read-post-on/