Looking for the best antivirus that works on ios, mac and windows. Currently looking at bitdefender totalt security and norton 360 deluxe. I like that bitdefender has more featuers like anti spam and anti phising but there ios version is not good from what i have heard. Norton seems better with there ios version but lack other things like a file shredder. But do i even need antivirus on my iphone? Or should i just choose the best one for mac and pc?