When you look at your box, you can have the app tell you which types you are lacking resistance to. However, it considers Fairy types even when you are playing a game that does not have Fairy types. For example, in my example game of Platinum below, I added Chimchar to my team and checked out the box typing chart. It told me that I have a Pokemon resistant to Fairy even though Fairy doesn't exist.
When you look at your box, you can have the app tell you which types you are lacking resistance to. However, it considers Fairy types even when you are playing a game that does not have Fairy types. For example, in my example game of Platinum below, I added Chimchar to my team and checked out the box typing chart. It told me that I have a Pokemon resistant to Fairy even though Fairy doesn't exist.