A more detailed guide for setting up AppLock on Android devices has been added to both the Resources and Recommendations pages and may also be found here.
While the use of OpenDNS as a router-based filter has been mentioned before, a new setup guide has been added to the resources page and may also be found here.
Qustodio is a very good option for filtering both computers and mobile devices. It provides device filtering, time limits, whitelist/blacklist, and accountability options. An guide for use and installation of Qustodio has been added to the resources page and may also be found here.