Ad And Stuff VPN Content Filter uses the VPN on the device to filter URLs, much like a hosts file, but better. It optionally blocks ads and porn. Its settings allow you to do the following:

-- set an internal IP address for the VPN in case the default one, 10.11.12.13, has a conflict on your LAN,
-- restore the default internal IP address,
-- optionally block ads and porn,
-- add ad and porn hosts to be blocked or remove ones in its internal database to keep them from being blocked,
-- change the DNS servers from OpenDNS to one of the several wired DNS providers or provide your own DNS servers,
-- and restore the default DNS servers.

It works by routing DNS calls only through the VPN. The VPN replies with Unknown if the requested host is in the app's internal database. Otherwise, it passes the request to the DNS provider selected for the VPN. The only external calls explicitly made by the app are to the DNS provider - the app does not call home or anywhere else and does not collect any data, personal or otherwise.

The app is not ad supported and does not feed you ads. Any ads received are from whoever your web browser or other app is calling since that traffic does not go through the VPN. If you see any ads, then please let us know. Some ads are not be possible to block with this app. For instance, you will still get ads in YouTube videos because those ads come from youtube.com. So the only way to block those ads is to block youtube.com and get nothing from there.