When comparing StopAd vs DNS66, the Slant community recommends DNS66 for most people. In the question“What are the best ad blockers?” DNS66 is ranked 8th while StopAd is ranked 22nd. The most important reason people chose DNS66 is:
By using a local VPN, the app doesn't need root privileges to function.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Multiplatform
Available for Windows, Mac, Android and iOS.
Pro Blocks ads on YouTube and Facebook on Windows and Mac
Blocks ads in social media websites including YouTube and Facebook.
Pro Works on all browsers without multiple downloads
As it's not an extension - it works on all browsers (Chrome, Opera, Safari, Firefox, IE etc)>
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 Doesn't block ads on YouTube and Facebook on mobile devices
Doesn't block ads on YouTube and Facebook on Android and iOS.
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