Technical merit? I don&#x27;t really know. This is based on the open source tracker list from Disconnect (disconnect.me).<p>FWIW, I was never into paying for an ad-blocker on iOS since that comes with its pitfalls. I have tried a couple of other free ones, and I did like Adblock Fast [1], the one I was using until Focus by Firefox and the one I still have. It&#x27;s open source and is available for Chrome (not iOS), Opera (not iOS) and Safari (iOS 9). I&#x27;d suggest reading through the GitHub page to see some stats as well as the philosophy (of not making money or compromising it with acceptable ads). [2]<p>[1]: <a href="https:&#x2F;&#x2F;itunes.apple.com&#x2F;us&#x2F;app&#x2F;adblock-fast&#x2F;id1032930802" rel="nofollow">https:&#x2F;&#x2F;itunes.apple.com&#x2F;us&#x2F;app&#x2F;adblock-fast&#x2F;id1032930802</a><p>[2]: <a href="https:&#x2F;&#x2F;github.com&#x2F;rocketshipapps&#x2F;adblockfast" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;rocketshipapps&#x2F;adblockfast</a>