iOS / iPad Setup:
From the iPad's home screen, tap Settings.
Tap General on the sidebar. The screen shown below appears.
Tap Network. The screen shown below appears.
Tap Wi-Fi. The available wireless networks in range of your iPad appear, as shown below.
Find your wireless network in the list, and then click the arrow. The screen shown below appears.
Tap the DNS field.
Delete the current DNS servers, and enter the new ProxyDNS servers. If you enter more than one DNS server, be sure sure to separate the servers with commas. Like this:
Restart the apps and open them again, now they will use ProxyDNS