Why do you want to use such apps anyway ? It's all really about the forex broker main app and that is really nothing more than that. Why install something else ? Just ask your broker and be good about everything. I would even be cautious in that case to do so.
You can find a lot of good apps on the Google Playstore and istore for starting trading on your smartphone. Internet has made it easier for all of us to trade as now, we can trade anytime from anywhere in this world. It is a huge plus for us as compared to the traders few decades back.
I think that you might ask your broker if he is proving application for trading from your mobile phone. As per my experience, deal execution is quite easy, however, making any sort of analysis is quite difficult. Laptop or PC are much better option for this purpose