I am using android.. but actually I am not a trader, I am just a small investor and a market observer. I sometimes trade for fun. But if you a trader you can not spend time seeing all aspects of alt coin, you have to focus in price, that is why I am not a trader and never will
Yes, trading altcoins is a full time job sometimes, and more...
Someone asked me to ask around which mobile platform he should learn first: Android or iOS.
I know people already use phones for 2FA and small widget/apps for price checking, blockchain wallets, SPV wallets, all kinds of things. It would be a good idea to know what client base is the largest, and what client base would pay the most, if different from mainstream population.