GFT I always preferred GFT iPhone program. Although I don't have an iPhone (I am a Blackberry man at the moment but thinking about going within the Android) but I was able to give it a proper test drive utilizing a friends iPhone. Its a pretty nice program which has live streaming quotes, streaming news, along with indiors. Works with a 3G connection. Http://www.gftforex.com/Software/Dea...e/Default.aspx
Oanda iPhone A buddy of mine also swears that Oanda's iPhone program is pretty good. Http://fxtrade.oanda.com/trade-forex/mobile/iphone
Oanda iPad The exact same friend also uses his iPad only to exchange currencies and stocks. He's given up on conventional computers and has chosen to use iPad only for trading a light web surfing. I got an opportunity to watch him in action, trading on his iPad and it works well. Http://fxtrade.oanda.com/trade-forex/mobile/ipad
MT5 iPhone/iPad Also, if you are an MT5 enthusiast you could look into utilizing MT5 for iPhone/iPad. Theres a positive buzz about MT5 for iPhone/iPad. Though it not officially out, I here there are traders that are beta testing this program on their live accounts. I really don't understand how one would go about getting their hands on a copy of their program but if never hurts to call Metaquotes and ask. http://www.metatrader5.com/en/mobile