Have you compared it too other products like outercurve, esignal, hillcast.... Quotestream hammers on them by far. Yes, it may be lacking features. You need to remember like most mobile applications they are extensions of desktop software. Any real trader isn't going to solely use a wireless application. But its definitely nice to have when you aren't at home or at the office. It keeps in touch with the market.

I would have to agree with the previous comments but hey for an average joe / semi active trader person like my self. I found it very usefully especially when I leave home or the office and don't have any access to the latest stock quote except for my BlackBerry.

TH eapplication looks good but the long term data is horrible. It looks like they don't adjust for spin offs, splits, and corporate actions. Take a look at symbols NTE or T for example.