Hi,
can´t comment what is written above but I can give you my experience. Few days ago, someone recommended me mymobile App from myscada. I must say, it is very intuitive mobile App for Android and also iOS. The visualization looks very proffesional and their technical support will help u if neccesary. But what I like the most is a free 5 tag version so you can try it and decide - that´s what i have done...
Good luck ;)