https://biz.prlog.org/tag/math-app/ math app - Free business directory on PRLog.Org, latest companies listed first. 60 https://biz.prlog.org/idevbooks/ idevbooks develops educational math apps for iPhone, iPod Touch and iPad. Their titles include Long Division, Long Multiplication, Column Addition, Columns Subtraction, Fraction math and several others.Fri, 10 Sep 2010 20:43:13 GMT