[LeoNatan25]

Ask Apple :) See this tweet: https://twitter.com/awfulben/status/638510622167052288

Apparently, content blockers work on 32-bit CPUs, but Apple is restricting them on the store to 64-bit only. So you can go the BlockParty + EasyList route: https://github.com/krishkumar/BlockParty

It works very well.

[Armand_Grillet]

Another open-source iOS 9 content blocker here, using EasyList and EasyPrivacy: https://github.com/ArmandGrillet/Adios (I'm the guy behind this project).

[pinewurst]

As a data point, I just built/installed BlockParty on iPhone 5 and iPad Retina and see nothing but performance improvement. Many thanks again for the link!