Ad And Stuff DNS Filter

Ad And Stuff DNS Filter can operate as a local VPN or as a DNS server.
It 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 VPN also seemless works when changing wifi networks or going mobile.
The DNS server uses the same database and like the VPN, optionally blocks ads and porn. It shares the same settings except that the VPN address does not apply to it.
The VPN and DNS server cannot run at the same time, and either of them can be started automatically when the app starts. Due to restrictions iOS apps have running in the background, it cannot be a DNS server for apps running on the device since it goes to sleep when another app comes to the foreground. However, it can put older devices, like iPhone 6's that are running iOS 12, to use as DNS servers that can be used by any other devices running on the same wifi network. To run as DNS servers, the devices must remain on with the DNS app running in the foreground and should be plugged in. The device's IP address is on the screen and is the one that should be used to make it a DNS server for specific devices. They should also be provided a static IP address so other devices using it as a DNS server do not have to be changed. The static IP address to use is the one displayed on the screen.
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.
As of version 3.0, it blocks domains for the VPN and DNS server that are one edit away or a single set of transposed characters (for instance appel.com) from hundreds of the most popular domains. A single edit means a single character substituted (aople.com), a single character deleted (aple.com), or a single character inserted (appple.com).
In addition to protecting you from the simple mistyping of a URL, it will also protect you from going to links in emails and websites that are purposely crafted in this manner to deceive you. It can be turned off with the Typo check in the Settings. If by some chance, you encounter a URL you need with one of these characteristics, it can be whitelisted in the Settings. And it does not affect performance - you won't notice the difference in web browsers or other applications.