The team behind the iOS 8.4 jailbreak called TaiG has finally adapted its application to Mac OS X. Previously available only for Windows, TaiG is now ready to be used directly on a Mac. You will not have to buy Parallel or Boot Camp just in order to unlock your iPhone or your iPad.
So, if you want to benefit from all the new stuff and freedom that some iPhone Tweaks allow, you can download (free of charge) the TaiG Jailbreak for iOS 8.4 for Mac on their website.
This TaiG Jailbreak will unlock your Apple devices running under iOS 8.4, iOS 8.3, iOS 8.2 and iOS 8.1.