If you are part of MAC, you can sign up for a Accountable2You account here. Each account will cover up to 6 devices. In order for this program to be sustainable, for each account, you or someone else will need to donate $36 per year ($3 per month). These accounts are the same individual accounts that you can sign up for directly on the Accountable2You site for $7 per month ($84 per year).
If you would prefer a Family account that covers up to 20 devices and additionally provides time limit alerts on children's devices, these are available only on the Accountable2You site (not through MAC). These cost $10 per month ($120 per year).
For details on the software, please visit www.accountable2you.com.