When comparing uBlock Origin vs DNS66, the Slant community recommends uBlock Origin for most people. In the question“What are the best ad blockers?” uBlock Origin is ranked 1st while DNS66 is ranked 8th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
Pro Light weight
Pro Promised to remain commercial interest free
uBlock will remain free from any commercial as stated by the creator. uBlock is meant to be strictly for the users and completely free.
Pro Lots of advanced features
For example, you can add more items to your HOST files like disable social tracking.
Pro Thoughtful UI
Its non-invasive design shows you how many times something's been blocked on a given web page – that number quickly jumps to the double- if not triple-digits in some cases.
Pro Can be used on Firefox Mobile
Pro Detects skimming
Skimming means replacing links so that they are rerouted, this is mostly a more friendly way to make money than showing ads.
Pro Edge version
Also available for Microsoft Edge browser.
Pro No root access required
By using a local VPN, the app doesn't need root privileges to function.
Pro Open Source
The app is available on the F-Droid open source app repository.
Pro Global ad-blocking
Ads are blocked in every app, and apps can be whitelisted.
Cons
Con Standby battery drain
The app can use unreasonable amounts of battery charge when the phone is locked and not in use.
Con Unstable
app might crash on longer usage and cause looping which need to be restarted especially when there is internet changes on android