Very simple. Almost like the one that comes for free in iOS. So why bother ? Because the free iOS app stopped updating news for some time.
Customer support does not reply to inquiries. Quite happy with it so far but youre on your own. I updated to the HD version. Its not obvious what it does compared with the PRO until you try. The HD will only track 1 stock with actual value paid. PRO can track them all. You cannot upgrade to the next level you have to buy again.
Syltrem about Stock Market App: Stock Tracker & Real Time Stocks, v2.0.0.3