From Ron Dorn :
EmailCellUsage allows you to schedule automatic email reports of cell phone usage on Sprint, AT&T, and Verizon accounts. Works on OSX, Linux, and Windows and emails are specifically formatted to look their best on IOS devices. It is ideal for tracking family use. Parent can get master reports of everyone's usage; kids can get a usage report of only their usage without needing to know the login account of the cell phone account. It supports multiple cell phone accounts from different carriers. No need to share data with a third party host, your machine and the cell phone provider's web site interact directly. From the cell provider's point of view, it just like you visited their web site, except this scheduled and automatic.