Here's a breastfeeding resources app that's free just this week (August 1-7) for World Breastfeeding Week!!! It's usually $4.99.
Nancy Mohrbacher provides reliable and up-to-date breastfeeding info. LCs and other lactation specialists use her books and other resources all the time:
https://www.nancymohrbacher.com/blog/2014/7/31/dont-miss-it-breastfeeding-solutions-app-free-august-1-to-7.html