It can use the same hosts sources as AdAway.
Little bit different technique, utilizing private VPN instead of hosts file, but same results: blocking to resolve FQDNs that are pushing ads
Easier to switch on/off, you can white-list not just FQDNs but also your apps
However, Android allows only a single private VPN at a time. If you need a VPN for work or so, DNS66 must be disabled or work apps must be white-listed