DNS Changer on my iPad
The easiest way for you to confirm whether or not you are infected if you're getting inconsistent results from tools is to manually check your DNS settings against the rogue servers.  These are the servers that were used in the attack:

85.255.112.0 through 85.255.127.255
67.210.0.0 through 67.210.15.255
93.188.160.0 through 93.188.167.255
77.67.83.0 through 77.67.83.255
213.109.64.0 through 213.109.79.255
64.28.176.0 through 64.28.191.255  

To check your DNS settings on osx, follow these instructions to open your network settings, choose a connection, and then check the DNS tab.

To check your DNS settings on your iPad, follow these instructions to open Settings>General>Network>Wi-Fi and then check the DNS settings of your wifi network.