Here is a link about a free app that you might find helpful. Its creator, Ryan Bilodeau, explains: “At a time when we as a society are facing unprecedented moral challenges, the app collects, categorizes, and stores the Church’s official moral teachings in one place. Searching through the Catechism of the Catholic Church can be a timely process, and the app can save people countless times doing research on their own.”

http://catholiccases.com