Tipsy

Tipsy is one of the best monitor app out there now.
It helps parents track the type of calls their children make and also their text messages. It also tracks their activities on other social media apps.
It is a trusted app and a good parental tool although it might be a nightmare from the Children's angle as they won't want to be monitored.
It has a two days Demo trial. And they are on a new year promo now and are offering 30% off.