iPhones have a separate processor for that. Not really an issue. It's even better in ios8 with regard to battery life tracking. As for the tracking, it asks

iPhones have a separate processor for that. Not really an issue. It's even better in ios8 with regard to battery life tracking. As for the tracking, it asks for permissions and is fairly obvious what it's doing. Yes, if you avoid reading or doing any level of discovery... If you just blindly install the app without thought, you could claim surprise. I find most people assume far worse than the opposite. Ask for location permissions, and they assume they are getting tracked by someone who is watching them in real time through their phones camera.