This is very important as a Parent to know who your children are communicating and conversing with. There may be someone who you do not want your child to be conversing with.By viewing the list you will then know if they are in fact communicating with that person.
Since kids use their phone at all times they will be keeping the people they most interact with on their contact lists. By getting a copy of their contact list when you first install the app on their phone you will be able to know who they are dealing with on a daily basis.
Kids sometimes do not know who they are dealing with or are over their head with people they should not be conversing with. With the right data you can help them navigate this problematic area if need be.