I wonder will there be a full mobile version to trade? I think if you succeed to make a great mobile app, you will get many new users.
But now, mobile app, no surprise, many exchanges now operate modern mobile applications. However on iOS they are much smaller, but in almost every exchange there is an app for Android and with this, new users are unlikely to attract.
Perhaps you are right, but on the other hand, it is not so easy to download a fraudulent program on the Apple Store, there is strict control over this and you can download a virus to the Android Market or a program of a copy of the original program that steals all the data from you.